Home / 2,080,309.60-3,120,464.40-1,278,992.80

Finding the Fourth Proportional to 2,080,309.60, 3,120,464.40 and 1,278,992.80

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Solution

The fourth proportional to 2,080,309.60, 3,120,464.40 and 1,278,992.80 is: 1,918,489.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080,309.60 : 3,120,464.40 = 1,278,992.80 : x
  2. Step 2: Convert to fraction form
    2,080,309.60/3,120,464.40 = 1,278,992.80/x
  3. Step 3: Cross multiply
    2,080,309.60x = 3,120,464.40 × 1,278,992.80
  4. Step 4: Simplify right side
    2,080,309.60x = 3,991,051,500,256.32
  5. Step 5: Solve for x
    x = 3,991,051,500,256.32/2,080,309.60
  6. Step 6: Final answer
    x = 1,918,489.20

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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.