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Finding the Fourth Proportional to 624,613.31, 861,966.18 and 338,133.18

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Solution

The fourth proportional to 624,613.31, 861,966.18 and 338,133.18 is: 466,623.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,613.31 : 861,966.18 = 338,133.18 : x
  2. Step 2: Convert to fraction form
    624,613.31/861,966.18 = 338,133.18/x
  3. Step 3: Cross multiply
    624,613.31x = 861,966.18 × 338,133.18
  4. Step 4: Simplify right side
    624,613.31x = 291,459,365,495.85
  5. Step 5: Solve for x
    x = 291,459,365,495.85/624,613.31
  6. Step 6: Final answer
    x = 466,623.69

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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.