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Finding the Fourth Proportional to 624,929.85, 862,398.90 and 338,443.38

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Solution

The fourth proportional to 624,929.85, 862,398.90 and 338,443.38 is: 467,049.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,929.85 : 862,398.90 = 338,443.38 : x
  2. Step 2: Convert to fraction form
    624,929.85/862,398.90 = 338,443.38/x
  3. Step 3: Cross multiply
    624,929.85x = 862,398.90 × 338,443.38
  4. Step 4: Simplify right side
    624,929.85x = 291,873,198,624.28
  5. Step 5: Solve for x
    x = 291,873,198,624.28/624,929.85
  6. Step 6: Final answer
    x = 467,049.54

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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.