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Finding the Fourth Proportional to 440,511.60, 660,767.40 and 124,978.80

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Solution

The fourth proportional to 440,511.60, 660,767.40 and 124,978.80 is: 187,468.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,511.60 : 660,767.40 = 124,978.80 : x
  2. Step 2: Convert to fraction form
    440,511.60/660,767.40 = 124,978.80/x
  3. Step 3: Cross multiply
    440,511.60x = 660,767.40 × 124,978.80
  4. Step 4: Simplify right side
    440,511.60x = 82,581,916,731.12
  5. Step 5: Solve for x
    x = 82,581,916,731.12/440,511.60
  6. Step 6: Final answer
    x = 187,468.20

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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.