Finding the Fourth Proportional to 717,504,306.24, 990,155,934.39 and 387,479,445.24
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Solution
The fourth proportional to 717,504,306.24, 990,155,934.39 and 387,479,445.24 is: 534,721,629.99
Step by Step Solution
- Step 1: Write the proportion equation
717,504,306.24 : 990,155,934.39 = 387,479,445.24 : x - Step 2: Convert to fraction form
717,504,306.24/990,155,934.39 = 387,479,445.24/x - Step 3: Cross multiply
717,504,306.24x = 990,155,934.39 × 387,479,445.24 - Step 4: Simplify right side
717,504,306.24x = 383,665,072,160,131,584 - Step 5: Solve for x
x = 383,665,072,160,131,584/717,504,306.24 - Step 6: Final answer
x = 534,721,629.99
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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.