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Finding the Fourth Proportional to 485,224.56, 726,753.54 and 372,071.40

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Solution

The fourth proportional to 485,224.56, 726,753.54 and 372,071.40 is: 557,276.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,224.56 : 726,753.54 = 372,071.40 : x
  2. Step 2: Convert to fraction form
    485,224.56/726,753.54 = 372,071.40/x
  3. Step 3: Cross multiply
    485,224.56x = 726,753.54 × 372,071.40
  4. Step 4: Simplify right side
    485,224.56x = 270,404,207,082.76
  5. Step 5: Solve for x
    x = 270,404,207,082.76/485,224.56
  6. Step 6: Final answer
    x = 557,276.42

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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.