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Finding the Fourth Proportional to 624,513.13, 861,830.36 and 338,032.87

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Solution

The fourth proportional to 624,513.13, 861,830.36 and 338,032.87 is: 466,486.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,513.13 : 861,830.36 = 338,032.87 : x
  2. Step 2: Convert to fraction form
    624,513.13/861,830.36 = 338,032.87/x
  3. Step 3: Cross multiply
    624,513.13x = 861,830.36 × 338,032.87
  4. Step 4: Simplify right side
    624,513.13x = 291,326,990,043.93
  5. Step 5: Solve for x
    x = 291,326,990,043.93/624,513.13
  6. Step 6: Final answer
    x = 466,486.57

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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.