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Finding the Fourth Proportional to 5,327,142.80, 7,981,528.80 and 2,481,418.40

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Solution

The fourth proportional to 5,327,142.80, 7,981,528.80 and 2,481,418.40 is: 3,717,848.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,327,142.80 : 7,981,528.80 = 2,481,418.40 : x
  2. Step 2: Convert to fraction form
    5,327,142.80/7,981,528.80 = 2,481,418.40/x
  3. Step 3: Cross multiply
    5,327,142.80x = 7,981,528.80 × 2,481,418.40
  4. Step 4: Simplify right side
    5,327,142.80x = 19,805,512,424,449.92
  5. Step 5: Solve for x
    x = 19,805,512,424,449.92/5,327,142.80
  6. Step 6: Final answer
    x = 3,717,848.98

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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.