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Finding the Fourth Proportional to 1,991,250.03, 2,988,471.17 and 1,031,979.89

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Solution

The fourth proportional to 1,991,250.03, 2,988,471.17 and 1,031,979.89 is: 1,548,797.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,250.03 : 2,988,471.17 = 1,031,979.89 : x
  2. Step 2: Convert to fraction form
    1,991,250.03/2,988,471.17 = 1,031,979.89/x
  3. Step 3: Cross multiply
    1,991,250.03x = 2,988,471.17 × 1,031,979.89
  4. Step 4: Simplify right side
    1,991,250.03x = 3,084,042,159,335.90
  5. Step 5: Solve for x
    x = 3,084,042,159,335.90/1,991,250.03
  6. Step 6: Final answer
    x = 1,548,797.04

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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.