Home / 3,987,830.20-5,981,745.30-2,074,642.60

Finding the Fourth Proportional to 3,987,830.20, 5,981,745.30 and 2,074,642.60

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Solution

The fourth proportional to 3,987,830.20, 5,981,745.30 and 2,074,642.60 is: 3,111,963.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987,830.20 : 5,981,745.30 = 2,074,642.60 : x
  2. Step 2: Convert to fraction form
    3,987,830.20/5,981,745.30 = 2,074,642.60/x
  3. Step 3: Cross multiply
    3,987,830.20x = 5,981,745.30 × 2,074,642.60
  4. Step 4: Simplify right side
    3,987,830.20x = 12,409,983,621,729.78
  5. Step 5: Solve for x
    x = 12,409,983,621,729.78/3,987,830.20
  6. Step 6: Final answer
    x = 3,111,963.90

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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.