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Finding the Fourth Proportional to 3,986,679.80, 5,972,891.70 and 2,425,863.80

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Solution

The fourth proportional to 3,986,679.80, 5,972,891.70 and 2,425,863.80 is: 3,634,458.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986,679.80 : 5,972,891.70 = 2,425,863.80 : x
  2. Step 2: Convert to fraction form
    3,986,679.80/5,972,891.70 = 2,425,863.80/x
  3. Step 3: Cross multiply
    3,986,679.80x = 5,972,891.70 × 2,425,863.80
  4. Step 4: Simplify right side
    3,986,679.80x = 14,489,421,756,350.46
  5. Step 5: Solve for x
    x = 14,489,421,756,350.46/3,986,679.80
  6. Step 6: Final answer
    x = 3,634,458.37

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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.