Home / 819,720.08-1,229,579.03-220,681.90

Finding the Fourth Proportional to 819,720.08, 1,229,579.03 and 220,681.90

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Solution

The fourth proportional to 819,720.08, 1,229,579.03 and 220,681.90 is: 331,022.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,720.08 : 1,229,579.03 = 220,681.90 : x
  2. Step 2: Convert to fraction form
    819,720.08/1,229,579.03 = 220,681.90/x
  3. Step 3: Cross multiply
    819,720.08x = 1,229,579.03 × 220,681.90
  4. Step 4: Simplify right side
    819,720.08x = 271,345,836,540.56
  5. Step 5: Solve for x
    x = 271,345,836,540.56/819,720.08
  6. Step 6: Final answer
    x = 331,022.56

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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.