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Finding the Fourth Proportional to 440,882.97, 660,856.21 and 280,454.20

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Solution

The fourth proportional to 440,882.97, 660,856.21 and 280,454.20 is: 420,383.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,882.97 : 660,856.21 = 280,454.20 : x
  2. Step 2: Convert to fraction form
    440,882.97/660,856.21 = 280,454.20/x
  3. Step 3: Cross multiply
    440,882.97x = 660,856.21 × 280,454.20
  4. Step 4: Simplify right side
    440,882.97x = 185,339,899,815.52
  5. Step 5: Solve for x
    x = 185,339,899,815.52/440,882.97
  6. Step 6: Final answer
    x = 420,383.44

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1.5x scale

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.