Home / 394,319.20-591,987.28-338,517.88

Finding the Fourth Proportional to 394,319.20, 591,987.28 and 338,517.88

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Solution

The fourth proportional to 394,319.20, 591,987.28 and 338,517.88 is: 508,213.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,319.20 : 591,987.28 = 338,517.88 : x
  2. Step 2: Convert to fraction form
    394,319.20/591,987.28 = 338,517.88/x
  3. Step 3: Cross multiply
    394,319.20x = 591,987.28 × 338,517.88
  4. Step 4: Simplify right side
    394,319.20x = 200,398,279,012.57
  5. Step 5: Solve for x
    x = 200,398,279,012.57/394,319.20
  6. Step 6: Final answer
    x = 508,213.34

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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.