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Finding the Fourth Proportional to 553,711.27, 764,128.70 and 327,354.79

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Solution

The fourth proportional to 553,711.27, 764,128.70 and 327,354.79 is: 451,753.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,711.27 : 764,128.70 = 327,354.79 : x
  2. Step 2: Convert to fraction form
    553,711.27/764,128.70 = 327,354.79/x
  3. Step 3: Cross multiply
    553,711.27x = 764,128.70 × 327,354.79
  4. Step 4: Simplify right side
    553,711.27x = 250,141,190,121.47
  5. Step 5: Solve for x
    x = 250,141,190,121.47/553,711.27
  6. Step 6: Final answer
    x = 451,753.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.