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Finding the Fourth Proportional to 713,451.78, 1,070,355.87 and 503,499.78

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Solution

The fourth proportional to 713,451.78, 1,070,355.87 and 503,499.78 is: 755,375.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,451.78 : 1,070,355.87 = 503,499.78 : x
  2. Step 2: Convert to fraction form
    713,451.78/1,070,355.87 = 503,499.78/x
  3. Step 3: Cross multiply
    713,451.78x = 1,070,355.87 × 503,499.78
  4. Step 4: Simplify right side
    713,451.78x = 538,923,945,066.71
  5. Step 5: Solve for x
    x = 538,923,945,066.71/713,451.78
  6. Step 6: Final answer
    x = 755,375.43

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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.