Finding the Fourth Proportional to 656,624.90, 905,988.03 and 398,496.13
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Solution
The fourth proportional to 656,624.90, 905,988.03 and 398,496.13 is: 549,830.99
Step by Step Solution
- Step 1: Write the proportion equation
656,624.90 : 905,988.03 = 398,496.13 : x - Step 2: Convert to fraction form
656,624.90/905,988.03 = 398,496.13/x - Step 3: Cross multiply
656,624.90x = 905,988.03 × 398,496.13 - Step 4: Simplify right side
656,624.90x = 361,032,719,251.38 - Step 5: Solve for x
x = 361,032,719,251.38/656,624.90 - Step 6: Final answer
x = 549,830.99
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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.