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Finding the Fourth Proportional to 482,695.20, 725,209.20 and 431,373.60

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Solution

The fourth proportional to 482,695.20, 725,209.20 and 431,373.60 is: 648,102.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,695.20 : 725,209.20 = 431,373.60 : x
  2. Step 2: Convert to fraction form
    482,695.20/725,209.20 = 431,373.60/x
  3. Step 3: Cross multiply
    482,695.20x = 725,209.20 × 431,373.60
  4. Step 4: Simplify right side
    482,695.20x = 312,836,103,357.12
  5. Step 5: Solve for x
    x = 312,836,103,357.12/482,695.20
  6. Step 6: Final answer
    x = 648,102.78

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1.5x scale

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.