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Finding the Fourth Proportional to 624,613.43, 861,966.35 and 338,133.31

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Solution

The fourth proportional to 624,613.43, 861,966.35 and 338,133.31 is: 466,623.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,613.43 : 861,966.35 = 338,133.31 : x
  2. Step 2: Convert to fraction form
    624,613.43/861,966.35 = 338,133.31/x
  3. Step 3: Cross multiply
    624,613.43x = 861,966.35 × 338,133.31
  4. Step 4: Simplify right side
    624,613.43x = 291,459,530,724.29
  5. Step 5: Solve for x
    x = 291,459,530,724.29/624,613.43
  6. Step 6: Final answer
    x = 466,623.86

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1.5x scale

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.