Finding the Fourth Proportional to 718,439.46, 991,425.24 and 396,149.49
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Solution
The fourth proportional to 718,439.46, 991,425.24 and 396,149.49 is: 546,674.60
Step by Step Solution
- Step 1: Write the proportion equation
718,439.46 : 991,425.24 = 396,149.49 : x - Step 2: Convert to fraction form
718,439.46/991,425.24 = 396,149.49/x - Step 3: Cross multiply
718,439.46x = 991,425.24 × 396,149.49 - Step 4: Simplify right side
718,439.46x = 392,752,603,199.13 - Step 5: Solve for x
x = 392,752,603,199.13/718,439.46 - Step 6: Final answer
x = 546,674.60
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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.