Home / 1,321,352.80-1,982,029.20-324,080.80

Finding the Fourth Proportional to 1,321,352.80, 1,982,029.20 and 324,080.80

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Solution

The fourth proportional to 1,321,352.80, 1,982,029.20 and 324,080.80 is: 486,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,352.80 : 1,982,029.20 = 324,080.80 : x
  2. Step 2: Convert to fraction form
    1,321,352.80/1,982,029.20 = 324,080.80/x
  3. Step 3: Cross multiply
    1,321,352.80x = 1,982,029.20 × 324,080.80
  4. Step 4: Simplify right side
    1,321,352.80x = 642,337,608,759.36
  5. Step 5: Solve for x
    x = 642,337,608,759.36/1,321,352.80
  6. Step 6: Final answer
    x = 486,121.20

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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.