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Finding the Fourth Proportional to 391,668.60, 588,755.70 and 363,934.20

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Solution

The fourth proportional to 391,668.60, 588,755.70 and 363,934.20 is: 547,065.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,668.60 : 588,755.70 = 363,934.20 : x
  2. Step 2: Convert to fraction form
    391,668.60/588,755.70 = 363,934.20/x
  3. Step 3: Cross multiply
    391,668.60x = 588,755.70 × 363,934.20
  4. Step 4: Simplify right side
    391,668.60x = 214,268,334,674.94
  5. Step 5: Solve for x
    x = 214,268,334,674.94/391,668.60
  6. Step 6: Final answer
    x = 547,065.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.