Home / 819,101.28-1,228,568.82-219,984.60

Finding the Fourth Proportional to 819,101.28, 1,228,568.82 and 219,984.60

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Solution

The fourth proportional to 819,101.28, 1,228,568.82 and 219,984.60 is: 329,954.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,101.28 : 1,228,568.82 = 219,984.60 : x
  2. Step 2: Convert to fraction form
    819,101.28/1,228,568.82 = 219,984.60/x
  3. Step 3: Cross multiply
    819,101.28x = 1,228,568.82 × 219,984.60
  4. Step 4: Simplify right side
    819,101.28x = 270,266,220,440.17
  5. Step 5: Solve for x
    x = 270,266,220,440.17/819,101.28
  6. Step 6: Final answer
    x = 329,954.58

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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.