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Finding the Fourth Proportional to 1,226,474, 1,692,560.04 and 689,930

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Solution

The fourth proportional to 1,226,474, 1,692,560.04 and 689,930 is: 952,117.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226,474 : 1,692,560.04 = 689,930 : x
  2. Step 2: Convert to fraction form
    1,226,474/1,692,560.04 = 689,930/x
  3. Step 3: Cross multiply
    1,226,474x = 1,692,560.04 × 689,930
  4. Step 4: Simplify right side
    1,226,474x = 1,167,747,948,397.20
  5. Step 5: Solve for x
    x = 1,167,747,948,397.20/1,226,474
  6. Step 6: Final answer
    x = 952,117.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.