Home / 2,120,219.28-3,180,028.82-681,027.78

Finding the Fourth Proportional to 2,120,219.28, 3,180,028.82 and 681,027.78

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Solution

The fourth proportional to 2,120,219.28, 3,180,028.82 and 681,027.78 is: 1,021,445.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120,219.28 : 3,180,028.82 = 681,027.78 : x
  2. Step 2: Convert to fraction form
    2,120,219.28/3,180,028.82 = 681,027.78/x
  3. Step 3: Cross multiply
    2,120,219.28x = 3,180,028.82 × 681,027.78
  4. Step 4: Simplify right side
    2,120,219.28x = 2,165,687,976,140.59
  5. Step 5: Solve for x
    x = 2,165,687,976,140.59/2,120,219.28
  6. Step 6: Final answer
    x = 1,021,445.28

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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.