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Finding the Fourth Proportional to 666,208.20, 998,656.20 and 329,300.85

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Solution

The fourth proportional to 666,208.20, 998,656.20 and 329,300.85 is: 493,626.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,208.20 : 998,656.20 = 329,300.85 : x
  2. Step 2: Convert to fraction form
    666,208.20/998,656.20 = 329,300.85/x
  3. Step 3: Cross multiply
    666,208.20x = 998,656.20 × 329,300.85
  4. Step 4: Simplify right side
    666,208.20x = 328,858,335,517.77
  5. Step 5: Solve for x
    x = 328,858,335,517.77/666,208.20
  6. Step 6: Final answer
    x = 493,626.97

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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.