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Finding the Fourth Proportional to 631,375.18, 871,265.09 and 344,839.91

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Solution

The fourth proportional to 631,375.18, 871,265.09 and 344,839.91 is: 475,861.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,375.18 : 871,265.09 = 344,839.91 : x
  2. Step 2: Convert to fraction form
    631,375.18/871,265.09 = 344,839.91/x
  3. Step 3: Cross multiply
    631,375.18x = 871,265.09 × 344,839.91
  4. Step 4: Simplify right side
    631,375.18x = 300,446,971,727.52
  5. Step 5: Solve for x
    x = 300,446,971,727.52/631,375.18
  6. Step 6: Final answer
    x = 475,861.24

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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.