Home / 2,080,406.20-3,120,609.30-1,279,089.40

Finding the Fourth Proportional to 2,080,406.20, 3,120,609.30 and 1,279,089.40

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Solution

The fourth proportional to 2,080,406.20, 3,120,609.30 and 1,279,089.40 is: 1,918,634.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080,406.20 : 3,120,609.30 = 1,279,089.40 : x
  2. Step 2: Convert to fraction form
    2,080,406.20/3,120,609.30 = 1,279,089.40/x
  3. Step 3: Cross multiply
    2,080,406.20x = 3,120,609.30 × 1,279,089.40
  4. Step 4: Simplify right side
    2,080,406.20x = 3,991,538,277,171.42
  5. Step 5: Solve for x
    x = 3,991,538,277,171.42/2,080,406.20
  6. Step 6: Final answer
    x = 1,918,634.10

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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.