Home / 3,121,819.80-4,682,859.30-991,843.80

Finding the Fourth Proportional to 3,121,819.80, 4,682,859.30 and 991,843.80

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Solution

The fourth proportional to 3,121,819.80, 4,682,859.30 and 991,843.80 is: 1,487,806.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121,819.80 : 4,682,859.30 = 991,843.80 : x
  2. Step 2: Convert to fraction form
    3,121,819.80/4,682,859.30 = 991,843.80/x
  3. Step 3: Cross multiply
    3,121,819.80x = 4,682,859.30 × 991,843.80
  4. Step 4: Simplify right side
    3,121,819.80x = 4,644,664,962,977.34
  5. Step 5: Solve for x
    x = 4,644,664,962,977.34/3,121,819.80
  6. Step 6: Final answer
    x = 1,487,806.88

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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.