Home / 1,386,738.60-2,080,107.90-677,221.80

Finding the Fourth Proportional to 1,386,738.60, 2,080,107.90 and 677,221.80

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Solution

The fourth proportional to 1,386,738.60, 2,080,107.90 and 677,221.80 is: 1,015,832.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,738.60 : 2,080,107.90 = 677,221.80 : x
  2. Step 2: Convert to fraction form
    1,386,738.60/2,080,107.90 = 677,221.80/x
  3. Step 3: Cross multiply
    1,386,738.60x = 2,080,107.90 × 677,221.80
  4. Step 4: Simplify right side
    1,386,738.60x = 1,408,694,416,232.22
  5. Step 5: Solve for x
    x = 1,408,694,416,232.22/1,386,738.60
  6. Step 6: Final answer
    x = 1,015,832.70

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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.