Formula : d/D = m/M
(d=distance cg moves , D= distance between holds , m=mass to be moved , M=total
mass)
We need to find 'd' so we need to calculate little 'm' divide by big 'M'
multiply by distance between holds , therefore:
390 divide by 116500 x 507 = 1.697
435 - 1.697 = 433.3