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Finding the Fourth Proportional to 3,609,655.65, 4,981,244.85 and 1,978,027.29

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Solution

The fourth proportional to 3,609,655.65, 4,981,244.85 and 1,978,027.29 is: 2,729,633.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609,655.65 : 4,981,244.85 = 1,978,027.29 : x
  2. Step 2: Convert to fraction form
    3,609,655.65/4,981,244.85 = 1,978,027.29/x
  3. Step 3: Cross multiply
    3,609,655.65x = 4,981,244.85 × 1,978,027.29
  4. Step 4: Simplify right side
    3,609,655.65x = 9,853,038,251,471.96
  5. Step 5: Solve for x
    x = 9,853,038,251,471.96/3,609,655.65
  6. Step 6: Final answer
    x = 2,729,633.85

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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.