Home / 1,987,792.65-2,981,032.88-639,632.90

Finding the Fourth Proportional to 1,987,792.65, 2,981,032.88 and 639,632.90

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Solution

The fourth proportional to 1,987,792.65, 2,981,032.88 and 639,632.90 is: 959,238.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,792.65 : 2,981,032.88 = 639,632.90 : x
  2. Step 2: Convert to fraction form
    1,987,792.65/2,981,032.88 = 639,632.90/x
  3. Step 3: Cross multiply
    1,987,792.65x = 2,981,032.88 × 639,632.90
  4. Step 4: Simplify right side
    1,987,792.65x = 1,906,766,710,284.17
  5. Step 5: Solve for x
    x = 1,906,766,710,284.17/1,987,792.65
  6. Step 6: Final answer
    x = 959,238.23

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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.