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Finding the Fourth Proportional to 979,660.80, 1,469,404.80 and 269,625.60

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Solution

The fourth proportional to 979,660.80, 1,469,404.80 and 269,625.60 is: 404,414.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,660.80 : 1,469,404.80 = 269,625.60 : x
  2. Step 2: Convert to fraction form
    979,660.80/1,469,404.80 = 269,625.60/x
  3. Step 3: Cross multiply
    979,660.80x = 1,469,404.80 × 269,625.60
  4. Step 4: Simplify right side
    979,660.80x = 396,189,150,842.88
  5. Step 5: Solve for x
    x = 396,189,150,842.88/979,660.80
  6. Step 6: Final answer
    x = 404,414.62

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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.