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Finding the Fourth Proportional to 624,512.13, 861,828.98 and 338,031.87

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Solution

The fourth proportional to 624,512.13, 861,828.98 and 338,031.87 is: 466,485.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,512.13 : 861,828.98 = 338,031.87 : x
  2. Step 2: Convert to fraction form
    624,512.13/861,828.98 = 338,031.87/x
  3. Step 3: Cross multiply
    624,512.13x = 861,828.98 × 338,031.87
  4. Step 4: Simplify right side
    624,512.13x = 291,325,660,039.43
  5. Step 5: Solve for x
    x = 291,325,660,039.43/624,512.13
  6. Step 6: Final answer
    x = 466,485.19

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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.