Finding the Fourth Proportional to 718,318.11, 991,323.53 and 396,027.62
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Solution
The fourth proportional to 718,318.11, 991,323.53 and 396,027.62 is: 546,542.67
Step by Step Solution
- Step 1: Write the proportion equation
718,318.11 : 991,323.53 = 396,027.62 : x - Step 2: Convert to fraction form
718,318.11/991,323.53 = 396,027.62/x - Step 3: Cross multiply
718,318.11x = 991,323.53 × 396,027.62 - Step 4: Simplify right side
718,318.11x = 392,591,498,235.90 - Step 5: Solve for x
x = 392,591,498,235.90/718,318.11 - Step 6: Final answer
x = 546,542.67
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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.