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Finding the Fourth Proportional to 667,096.80, 999,964.80 and 329,618.40

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Solution

The fourth proportional to 667,096.80, 999,964.80 and 329,618.40 is: 494,091.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,096.80 : 999,964.80 = 329,618.40 : x
  2. Step 2: Convert to fraction form
    667,096.80/999,964.80 = 329,618.40/x
  3. Step 3: Cross multiply
    667,096.80x = 999,964.80 × 329,618.40
  4. Step 4: Simplify right side
    667,096.80x = 329,606,797,432.32
  5. Step 5: Solve for x
    x = 329,606,797,432.32/667,096.80
  6. Step 6: Final answer
    x = 494,091.41

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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.