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Finding the Fourth Proportional to 666,578.72, 999,863.22 and 267,213.62

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Solution

The fourth proportional to 666,578.72, 999,863.22 and 267,213.62 is: 400,818.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,578.72 : 999,863.22 = 267,213.62 : x
  2. Step 2: Convert to fraction form
    666,578.72/999,863.22 = 267,213.62/x
  3. Step 3: Cross multiply
    666,578.72x = 999,863.22 × 267,213.62
  4. Step 4: Simplify right side
    666,578.72x = 267,177,070,521.06
  5. Step 5: Solve for x
    x = 267,177,070,521.06/666,578.72
  6. Step 6: Final answer
    x = 400,818.48

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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.