Home / 2,080,128.20-3,120,192.30-1,719,321.80

Finding the Fourth Proportional to 2,080,128.20, 3,120,192.30 and 1,719,321.80

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Solution

The fourth proportional to 2,080,128.20, 3,120,192.30 and 1,719,321.80 is: 2,578,982.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080,128.20 : 3,120,192.30 = 1,719,321.80 : x
  2. Step 2: Convert to fraction form
    2,080,128.20/3,120,192.30 = 1,719,321.80/x
  3. Step 3: Cross multiply
    2,080,128.20x = 3,120,192.30 × 1,719,321.80
  4. Step 4: Simplify right side
    2,080,128.20x = 5,364,614,641,582.14
  5. Step 5: Solve for x
    x = 5,364,614,641,582.14/2,080,128.20
  6. Step 6: Final answer
    x = 2,578,982.70

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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.