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Finding the Fourth Proportional to 580,892.20, 870,076.49 and 280,743.30

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Solution

The fourth proportional to 580,892.20, 870,076.49 and 280,743.30 is: 420,505.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,892.20 : 870,076.49 = 280,743.30 : x
  2. Step 2: Convert to fraction form
    580,892.20/870,076.49 = 280,743.30/x
  3. Step 3: Cross multiply
    580,892.20x = 870,076.49 × 280,743.30
  4. Step 4: Simplify right side
    580,892.20x = 244,268,147,966.88
  5. Step 5: Solve for x
    x = 244,268,147,966.88/580,892.20
  6. Step 6: Final answer
    x = 420,505.13

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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.