Finding the Fourth Proportional to 943,780.68, 1,302,701.94 and 642,149.64
Calculator
Solution
The fourth proportional to 943,780.68, 1,302,701.94 and 642,149.64 is: 886,360.15
Step by Step Solution
- Step 1: Write the proportion equation
943,780.68 : 1,302,701.94 = 642,149.64 : x - Step 2: Convert to fraction form
943,780.68/1,302,701.94 = 642,149.64/x - Step 3: Cross multiply
943,780.68x = 1,302,701.94 × 642,149.64 - Step 4: Simplify right side
943,780.68x = 836,529,581,798.30 - Step 5: Solve for x
x = 836,529,581,798.30/943,780.68 - Step 6: Final answer
x = 886,360.15
Related Problems
Find fourth proportional to 471,890.34, 651,350.97 and 321,074.82
Half scale
Find fourth proportional to 1,887,561.36, 2,605,403.88 and 1,284,299.28
Double scale
Find fourth proportional to 943,781.68, 1,302,703.32 and 642,150.64
Similar ratio
Find fourth proportional to 1,415,671.02, 1,954,052.91 and 963,224.46
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.