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Finding the Fourth Proportional to 624,611.43, 861,963.59 and 338,131.31

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Solution

The fourth proportional to 624,611.43, 861,963.59 and 338,131.31 is: 466,621.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,611.43 : 861,963.59 = 338,131.31 : x
  2. Step 2: Convert to fraction form
    624,611.43/861,963.59 = 338,131.31/x
  3. Step 3: Cross multiply
    624,611.43x = 861,963.59 × 338,131.31
  4. Step 4: Simplify right side
    624,611.43x = 291,456,874,394.51
  5. Step 5: Solve for x
    x = 291,456,874,394.51/624,611.43
  6. Step 6: Final answer
    x = 466,621.10

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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.