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Finding the Fourth Proportional to 631,171.28, 871,011.77 and 344,691.29

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Solution

The fourth proportional to 631,171.28, 871,011.77 and 344,691.29 is: 475,671.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,171.28 : 871,011.77 = 344,691.29 : x
  2. Step 2: Convert to fraction form
    631,171.28/871,011.77 = 344,691.29/x
  3. Step 3: Cross multiply
    631,171.28x = 871,011.77 × 344,691.29
  4. Step 4: Simplify right side
    631,171.28x = 300,230,171,060.56
  5. Step 5: Solve for x
    x = 300,230,171,060.56/631,171.28
  6. Step 6: Final answer
    x = 475,671.47

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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.