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Finding the Fourth Proportional to 971,956.78, 1,456,753.17 and 687,729.22

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Solution

The fourth proportional to 971,956.78, 1,456,753.17 and 687,729.22 is: 1,030,757.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,956.78 : 1,456,753.17 = 687,729.22 : x
  2. Step 2: Convert to fraction form
    971,956.78/1,456,753.17 = 687,729.22/x
  3. Step 3: Cross multiply
    971,956.78x = 1,456,753.17 × 687,729.22
  4. Step 4: Simplify right side
    971,956.78x = 1,001,851,721,336.63
  5. Step 5: Solve for x
    x = 1,001,851,721,336.63/971,956.78
  6. Step 6: Final answer
    x = 1,030,757.48

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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.