Home / 819,102.78-1,228,571.07-219,986.10

Finding the Fourth Proportional to 819,102.78, 1,228,571.07 and 219,986.10

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Solution

The fourth proportional to 819,102.78, 1,228,571.07 and 219,986.10 is: 329,956.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,102.78 : 1,228,571.07 = 219,986.10 : x
  2. Step 2: Convert to fraction form
    819,102.78/1,228,571.07 = 219,986.10/x
  3. Step 3: Cross multiply
    819,102.78x = 1,228,571.07 × 219,986.10
  4. Step 4: Simplify right side
    819,102.78x = 270,268,558,262.13
  5. Step 5: Solve for x
    x = 270,268,558,262.13/819,102.78
  6. Step 6: Final answer
    x = 329,956.83

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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.