Home / 819,103.28-1,228,571.84-219,986.56

Finding the Fourth Proportional to 819,103.28, 1,228,571.84 and 219,986.56

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Solution

The fourth proportional to 819,103.28, 1,228,571.84 and 219,986.56 is: 329,957.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,103.28 : 1,228,571.84 = 219,986.56 : x
  2. Step 2: Convert to fraction form
    819,103.28/1,228,571.84 = 219,986.56/x
  3. Step 3: Cross multiply
    819,103.28x = 1,228,571.84 × 219,986.56
  4. Step 4: Simplify right side
    819,103.28x = 270,269,292,794.47
  5. Step 5: Solve for x
    x = 270,269,292,794.47/819,103.28
  6. Step 6: Final answer
    x = 329,957.53

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1.5x scale

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.