Finding the Fourth Proportional to 906,390,107.70, 1,359,585,161.55 and 724,991,579.70
Calculator
Solution
The fourth proportional to 906,390,107.70, 1,359,585,161.55 and 724,991,579.70 is: 1,087,487,369.55
Step by Step Solution
- Step 1: Write the proportion equation
906,390,107.70 : 1,359,585,161.55 = 724,991,579.70 : x - Step 2: Convert to fraction form
906,390,107.70/1,359,585,161.55 = 724,991,579.70/x - Step 3: Cross multiply
906,390,107.70x = 1,359,585,161.55 × 724,991,579.70 - Step 4: Simplify right side
906,390,107.70x = 985,687,794,008,814,208 - Step 5: Solve for x
x = 985,687,794,008,814,208/906,390,107.70 - Step 6: Final answer
x = 1,087,487,369.55
Related Problems
Find fourth proportional to 453,195,053.85, 679,792,580.78 and 362,495,789.85
Half scale
Find fourth proportional to 1,812,780,215.40, 2,719,170,323.10 and 1,449,983,159.40
Double scale
Find fourth proportional to 906,390,108.70, 1,359,585,163.05 and 724,991,580.70
Similar ratio
Find fourth proportional to 1,359,585,161.55, 2,039,377,742.33 and 1,087,487,369.55
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.