Home / 3,987,660.80-5,981,491.20-1,966,872.80

Finding the Fourth Proportional to 3,987,660.80, 5,981,491.20 and 1,966,872.80

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Solution

The fourth proportional to 3,987,660.80, 5,981,491.20 and 1,966,872.80 is: 2,950,309.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987,660.80 : 5,981,491.20 = 1,966,872.80 : x
  2. Step 2: Convert to fraction form
    3,987,660.80/5,981,491.20 = 1,966,872.80/x
  3. Step 3: Cross multiply
    3,987,660.80x = 5,981,491.20 × 1,966,872.80
  4. Step 4: Simplify right side
    3,987,660.80x = 11,764,832,344,719.36
  5. Step 5: Solve for x
    x = 11,764,832,344,719.36/3,987,660.80
  6. Step 6: Final answer
    x = 2,950,309.20

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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.