Finding the Fourth Proportional to 498,612.69, 688,139.69 and 307,621.17
Calculator
Solution
The fourth proportional to 498,612.69, 688,139.69 and 307,621.17 is: 424,550.64
Step by Step Solution
- Step 1: Write the proportion equation
498,612.69 : 688,139.69 = 307,621.17 : x - Step 2: Convert to fraction form
498,612.69/688,139.69 = 307,621.17/x - Step 3: Cross multiply
498,612.69x = 688,139.69 × 307,621.17 - Step 4: Simplify right side
498,612.69x = 211,686,335,023.13 - Step 5: Solve for x
x = 211,686,335,023.13/498,612.69 - Step 6: Final answer
x = 424,550.64
Related Problems
Find fourth proportional to 249,306.35, 344,069.84 and 153,810.59
Half scale
Find fourth proportional to 997,225.38, 1,376,279.37 and 615,242.34
Double scale
Find fourth proportional to 498,613.69, 688,141.07 and 307,622.17
Similar ratio
Find fourth proportional to 747,919.04, 1,032,209.53 and 461,431.76
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.