Home / 480,780,000.80-721,170,001.20-299,381,472.80

Finding the Fourth Proportional to 480,780,000.80, 721,170,001.20 and 299,381,472.80

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Solution

The fourth proportional to 480,780,000.80, 721,170,001.20 and 299,381,472.80 is: 449,072,209.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,780,000.80 : 721,170,001.20 = 299,381,472.80 : x
  2. Step 2: Convert to fraction form
    480,780,000.80/721,170,001.20 = 299,381,472.80/x
  3. Step 3: Cross multiply
    480,780,000.80x = 721,170,001.20 × 299,381,472.80
  4. Step 4: Simplify right side
    480,780,000.80x = 215,904,937,098,433,792
  5. Step 5: Solve for x
    x = 215,904,937,098,433,792/480,780,000.80
  6. Step 6: Final answer
    x = 449,072,209.20

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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.