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Finding the Fourth Proportional to 655,008.40, 980,179.80 and 454,387.60

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Solution

The fourth proportional to 655,008.40, 980,179.80 and 454,387.60 is: 679,963.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,008.40 : 980,179.80 = 454,387.60 : x
  2. Step 2: Convert to fraction form
    655,008.40/980,179.80 = 454,387.60/x
  3. Step 3: Cross multiply
    655,008.40x = 980,179.80 × 454,387.60
  4. Step 4: Simplify right side
    655,008.40x = 445,381,546,890.48
  5. Step 5: Solve for x
    x = 445,381,546,890.48/655,008.40
  6. Step 6: Final answer
    x = 679,963.11

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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.