Home / 1,987,517.80-2,981,276.70-1,314,359.20

Finding the Fourth Proportional to 1,987,517.80, 2,981,276.70 and 1,314,359.20

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Solution

The fourth proportional to 1,987,517.80, 2,981,276.70 and 1,314,359.20 is: 1,971,538.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,517.80 : 2,981,276.70 = 1,314,359.20 : x
  2. Step 2: Convert to fraction form
    1,987,517.80/2,981,276.70 = 1,314,359.20/x
  3. Step 3: Cross multiply
    1,987,517.80x = 2,981,276.70 × 1,314,359.20
  4. Step 4: Simplify right side
    1,987,517.80x = 3,918,468,458,390.64
  5. Step 5: Solve for x
    x = 3,918,468,458,390.64/1,987,517.80
  6. Step 6: Final answer
    x = 1,971,538.80

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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.