Home / 1,987,470.27-2,981,206.42-639,632.70

Finding the Fourth Proportional to 1,987,470.27, 2,981,206.42 and 639,632.70

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Solution

The fourth proportional to 1,987,470.27, 2,981,206.42 and 639,632.70 is: 959,449.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,470.27 : 2,981,206.42 = 639,632.70 : x
  2. Step 2: Convert to fraction form
    1,987,470.27/2,981,206.42 = 639,632.70/x
  3. Step 3: Cross multiply
    1,987,470.27x = 2,981,206.42 × 639,632.70
  4. Step 4: Simplify right side
    1,987,470.27x = 1,906,877,110,082.85
  5. Step 5: Solve for x
    x = 1,906,877,110,082.85/1,987,470.27
  6. Step 6: Final answer
    x = 959,449.38

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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.