Home / 1,987,383.60-2,981,950.20-921,877.20

Finding the Fourth Proportional to 1,987,383.60, 2,981,950.20 and 921,877.20

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Solution

The fourth proportional to 1,987,383.60, 2,981,950.20 and 921,877.20 is: 1,383,221.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,383.60 : 2,981,950.20 = 921,877.20 : x
  2. Step 2: Convert to fraction form
    1,987,383.60/2,981,950.20 = 921,877.20/x
  3. Step 3: Cross multiply
    1,987,383.60x = 2,981,950.20 × 921,877.20
  4. Step 4: Simplify right side
    1,987,383.60x = 2,748,991,900,915.44
  5. Step 5: Solve for x
    x = 2,748,991,900,915.44/1,987,383.60
  6. Step 6: Final answer
    x = 1,383,221.59

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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.