Home / 728,000,687.40-1,092,001,031.10-291,368,761.80

Finding the Fourth Proportional to 728,000,687.40, 1,092,001,031.10 and 291,368,761.80

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Solution

The fourth proportional to 728,000,687.40, 1,092,001,031.10 and 291,368,761.80 is: 437,053,142.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,000,687.40 : 1,092,001,031.10 = 291,368,761.80 : x
  2. Step 2: Convert to fraction form
    728,000,687.40/1,092,001,031.10 = 291,368,761.80/x
  3. Step 3: Cross multiply
    728,000,687.40x = 1,092,001,031.10 × 291,368,761.80
  4. Step 4: Simplify right side
    728,000,687.40x = 318,174,988,315,930,304
  5. Step 5: Solve for x
    x = 318,174,988,315,930,304/728,000,687.40
  6. Step 6: Final answer
    x = 437,053,142.70

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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.