How to find 1/3 distance between two vectors.

I have a triangle, and focusing on P1 and P2 I need to break this edge into smaller fractional parts. I need to end up with the location of P3, and P4 in the diagram. What am I doing wrong?

FVector fractionOfLength = (myPoint1 - myPoint2) / 3;

FVector myPoint3 = myPoint1 + fractionOfLength;
FVector myPoint4 = myPoint3 + fractionOfLength;


Bah, NM. I didn’t have my division variable blocked out. All good now.