Home / 981,340.80-1,472,011.20-681,187.20

Finding the Fourth Proportional to 981,340.80, 1,472,011.20 and 681,187.20

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Solution

The fourth proportional to 981,340.80, 1,472,011.20 and 681,187.20 is: 1,021,780.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,340.80 : 1,472,011.20 = 681,187.20 : x
  2. Step 2: Convert to fraction form
    981,340.80/1,472,011.20 = 681,187.20/x
  3. Step 3: Cross multiply
    981,340.80x = 1,472,011.20 × 681,187.20
  4. Step 4: Simplify right side
    981,340.80x = 1,002,715,187,696.64
  5. Step 5: Solve for x
    x = 1,002,715,187,696.64/981,340.80
  6. Step 6: Final answer
    x = 1,021,780.80

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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.