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Finding the Fourth Proportional to 481,489.25, 721,963.74 and 329,857.61

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Solution

The fourth proportional to 481,489.25, 721,963.74 and 329,857.61 is: 494,601.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,489.25 : 721,963.74 = 329,857.61 : x
  2. Step 2: Convert to fraction form
    481,489.25/721,963.74 = 329,857.61/x
  3. Step 3: Cross multiply
    481,489.25x = 721,963.74 × 329,857.61
  4. Step 4: Simplify right side
    481,489.25x = 238,145,233,783.06
  5. Step 5: Solve for x
    x = 238,145,233,783.06/481,489.25
  6. Step 6: Final answer
    x = 494,601.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.