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Finding the Fourth Proportional to 667,098.80, 999,967.80 and 329,620.40

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Solution

The fourth proportional to 667,098.80, 999,967.80 and 329,620.40 is: 494,094.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,098.80 : 999,967.80 = 329,620.40 : x
  2. Step 2: Convert to fraction form
    667,098.80/999,967.80 = 329,620.40/x
  3. Step 3: Cross multiply
    667,098.80x = 999,967.80 × 329,620.40
  4. Step 4: Simplify right side
    667,098.80x = 329,609,786,223.12
  5. Step 5: Solve for x
    x = 329,609,786,223.12/667,098.80
  6. Step 6: Final answer
    x = 494,094.41

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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.