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Finding the Fourth Proportional to 631,387.67, 871,304.06 and 344,900.39

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Solution

The fourth proportional to 631,387.67, 871,304.06 and 344,900.39 is: 475,956.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,387.67 : 871,304.06 = 344,900.39 : x
  2. Step 2: Convert to fraction form
    631,387.67/871,304.06 = 344,900.39/x
  3. Step 3: Cross multiply
    631,387.67x = 871,304.06 × 344,900.39
  4. Step 4: Simplify right side
    631,387.67x = 300,513,108,378.08
  5. Step 5: Solve for x
    x = 300,513,108,378.08/631,387.67
  6. Step 6: Final answer
    x = 475,956.57

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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.