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Finding the Fourth Proportional to 924,960.80, 1,387,246.80 and 392,499.20

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Solution

The fourth proportional to 924,960.80, 1,387,246.80 and 392,499.20 is: 588,666.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    924,960.80 : 1,387,246.80 = 392,499.20 : x
  2. Step 2: Convert to fraction form
    924,960.80/1,387,246.80 = 392,499.20/x
  3. Step 3: Cross multiply
    924,960.80x = 1,387,246.80 × 392,499.20
  4. Step 4: Simplify right side
    924,960.80x = 544,493,259,202.56
  5. Step 5: Solve for x
    x = 544,493,259,202.56/924,960.80
  6. Step 6: Final answer
    x = 588,666.31

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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.