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Finding the Fourth Proportional to 624,686.92, 862,066.86 and 338,207

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Solution

The fourth proportional to 624,686.92, 862,066.86 and 338,207 is: 466,725.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,686.92 : 862,066.86 = 338,207 : x
  2. Step 2: Convert to fraction form
    624,686.92/862,066.86 = 338,207/x
  3. Step 3: Cross multiply
    624,686.92x = 862,066.86 × 338,207
  4. Step 4: Simplify right side
    624,686.92x = 291,557,046,520.02
  5. Step 5: Solve for x
    x = 291,557,046,520.02/624,686.92
  6. Step 6: Final answer
    x = 466,725.07

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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.