Home / 1,987,354.53-2,981,080.80-725,181.75

Finding the Fourth Proportional to 1,987,354.53, 2,981,080.80 and 725,181.75

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Solution

The fourth proportional to 1,987,354.53, 2,981,080.80 and 725,181.75 is: 1,087,790.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,354.53 : 2,981,080.80 = 725,181.75 : x
  2. Step 2: Convert to fraction form
    1,987,354.53/2,981,080.80 = 725,181.75/x
  3. Step 3: Cross multiply
    1,987,354.53x = 2,981,080.80 × 725,181.75
  4. Step 4: Simplify right side
    1,987,354.53x = 2,161,825,391,435.40
  5. Step 5: Solve for x
    x = 2,161,825,391,435.40/1,987,354.53
  6. Step 6: Final answer
    x = 1,087,790.51

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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.