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Finding the Fourth Proportional to 659,919.90, 991,082.70 and 577,251.30

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Solution

The fourth proportional to 659,919.90, 991,082.70 and 577,251.30 is: 866,929.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,919.90 : 991,082.70 = 577,251.30 : x
  2. Step 2: Convert to fraction form
    659,919.90/991,082.70 = 577,251.30/x
  3. Step 3: Cross multiply
    659,919.90x = 991,082.70 × 577,251.30
  4. Step 4: Simplify right side
    659,919.90x = 572,103,776,982.51
  5. Step 5: Solve for x
    x = 572,103,776,982.51/659,919.90
  6. Step 6: Final answer
    x = 866,929.12

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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.