Finding the Fourth Proportional to 391,034.08, 539,348.76 and 358,872.60
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Solution
The fourth proportional to 391,034.08, 539,348.76 and 358,872.60 is: 494,988.80
Step by Step Solution
- Step 1: Write the proportion equation
391,034.08 : 539,348.76 = 358,872.60 : x - Step 2: Convert to fraction form
391,034.08/539,348.76 = 358,872.60/x - Step 3: Cross multiply
391,034.08x = 539,348.76 × 358,872.60 - Step 4: Simplify right side
391,034.08x = 193,557,491,807.98 - Step 5: Solve for x
x = 193,557,491,807.98/391,034.08 - Step 6: Final answer
x = 494,988.80
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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.