I’d thought of that, too.
The reasoning behind this being the sodium/potassium ion pump.
It works by creating an electrochemical gradient by transferring 3 sodium ions out of the cell and 2 potassium ions in.
It would make sense then that we need a 3/2 ratio of sodium to potassium to maintain balance.
The average American gets about 3400mg of sodium a day.
The recommendation based on this 3/2 ratio would then be 2266mg.
The average American consumes about 2350mg of potassium per day. It’s almost too convenient how well that matches up.
Italian researchers reported in a 2011 meta-analysis that a 1.64 g higher daily intake of potassium was associated with a 21% lower risk of stroke.
Adding this increase to our average results in 4000mg of potassium per day. Very close the the recommendation.
Based on that evidence, it’s your call and anybody’s guess.
The mechanism by which excessive salt can cause heart disease is independent of the sodium/potassium pump, however.
It lowers production of nitrous oxide in the body, a substance which "[inhibits] vascular smooth muscle contraction and growth, platelet aggregation, and leukocyte adhesion to the endothelium ".
So keeping the ratio correct but going over on your sodium would be a very bad idea.
It’s been suggested that 500mg of salt may be an adequate daily intake. I would do some research if you plan to eat outside of the bounds of the RDAs.