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Finding the Fourth Proportional to 631,381.59, 871,325.73 and 344,920.11

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Solution

The fourth proportional to 631,381.59, 871,325.73 and 344,920.11 is: 476,000.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,381.59 : 871,325.73 = 344,920.11 : x
  2. Step 2: Convert to fraction form
    631,381.59/871,325.73 = 344,920.11/x
  3. Step 3: Cross multiply
    631,381.59x = 871,325.73 × 344,920.11
  4. Step 4: Simplify right side
    631,381.59x = 300,537,766,637.43
  5. Step 5: Solve for x
    x = 300,537,766,637.43/631,381.59
  6. Step 6: Final answer
    x = 476,000.21

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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.