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Finding the Fourth Proportional to 624,616.42, 861,963.51 and 338,130.22

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Solution

The fourth proportional to 624,616.42, 861,963.51 and 338,130.22 is: 466,615.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,616.42 : 861,963.51 = 338,130.22 : x
  2. Step 2: Convert to fraction form
    624,616.42/861,963.51 = 338,130.22/x
  3. Step 3: Cross multiply
    624,616.42x = 861,963.51 × 338,130.22
  4. Step 4: Simplify right side
    624,616.42x = 291,455,911,268.27
  5. Step 5: Solve for x
    x = 291,455,911,268.27/624,616.42
  6. Step 6: Final answer
    x = 466,615.83

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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.