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Finding the Fourth Proportional to 872,507.61, 1,308,761.42 and 273,471.92

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Solution

The fourth proportional to 872,507.61, 1,308,761.42 and 273,471.92 is: 410,207.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,507.61 : 1,308,761.42 = 273,471.92 : x
  2. Step 2: Convert to fraction form
    872,507.61/1,308,761.42 = 273,471.92/x
  3. Step 3: Cross multiply
    872,507.61x = 1,308,761.42 × 273,471.92
  4. Step 4: Simplify right side
    872,507.61x = 357,909,498,349.33
  5. Step 5: Solve for x
    x = 357,909,498,349.33/872,507.61
  6. Step 6: Final answer
    x = 410,207.88

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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.