Home / 1,321,993.80-1,982,990.70-324,721.80

Finding the Fourth Proportional to 1,321,993.80, 1,982,990.70 and 324,721.80

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Solution

The fourth proportional to 1,321,993.80, 1,982,990.70 and 324,721.80 is: 487,082.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,993.80 : 1,982,990.70 = 324,721.80 : x
  2. Step 2: Convert to fraction form
    1,321,993.80/1,982,990.70 = 324,721.80/x
  3. Step 3: Cross multiply
    1,321,993.80x = 1,982,990.70 × 324,721.80
  4. Step 4: Simplify right side
    1,321,993.80x = 643,920,309,487.26
  5. Step 5: Solve for x
    x = 643,920,309,487.26/1,321,993.80
  6. Step 6: Final answer
    x = 487,082.70

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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.