Home / 1,987,385.93-2,981,080.26-639,548.26

Finding the Fourth Proportional to 1,987,385.93, 2,981,080.26 and 639,548.26

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Solution

The fourth proportional to 1,987,385.93, 2,981,080.26 and 639,548.26 is: 959,322.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,385.93 : 2,981,080.26 = 639,548.26 : x
  2. Step 2: Convert to fraction form
    1,987,385.93/2,981,080.26 = 639,548.26/x
  3. Step 3: Cross multiply
    1,987,385.93x = 2,981,080.26 × 639,548.26
  4. Step 4: Simplify right side
    1,987,385.93x = 1,906,544,685,750.65
  5. Step 5: Solve for x
    x = 1,906,544,685,750.65/1,987,385.93
  6. Step 6: Final answer
    x = 959,322.83

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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.