loraine walked 4 miles up, riana walked 3 miles right, the distance between them wil be the hypotenusa which is probably 5, yes? It forms a right triangle:
dist² = 3² + 4²
dist² = 9 + 16
dist² = 25
dist =
dist = 5
now draw that triangle on the grid and there you go
As you said 33 of total respondents would vote for red, and the total number of respondents is now 11,500,000, the number who voted for red would remain the same. There is no ratio. 33 people would vote for red.