Home / 1,987,287.10-2,981,427.45-639,576.70

Finding the Fourth Proportional to 1,987,287.10, 2,981,427.45 and 639,576.70

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Solution

The fourth proportional to 1,987,287.10, 2,981,427.45 and 639,576.70 is: 959,524.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,287.10 : 2,981,427.45 = 639,576.70 : x
  2. Step 2: Convert to fraction form
    1,987,287.10/2,981,427.45 = 639,576.70/x
  3. Step 3: Cross multiply
    1,987,287.10x = 2,981,427.45 × 639,576.70
  4. Step 4: Simplify right side
    1,987,287.10x = 1,906,851,529,760.42
  5. Step 5: Solve for x
    x = 1,906,851,529,760.42/1,987,287.10
  6. Step 6: Final answer
    x = 959,524.94

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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.