Home / 818,829.61-1,228,244.41-319,843.69

Finding the Fourth Proportional to 818,829.61, 1,228,244.41 and 319,843.69

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Solution

The fourth proportional to 818,829.61, 1,228,244.41 and 319,843.69 is: 479,765.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,829.61 : 1,228,244.41 = 319,843.69 : x
  2. Step 2: Convert to fraction form
    818,829.61/1,228,244.41 = 319,843.69/x
  3. Step 3: Cross multiply
    818,829.61x = 1,228,244.41 × 319,843.69
  4. Step 4: Simplify right side
    818,829.61x = 392,846,221,645.47
  5. Step 5: Solve for x
    x = 392,846,221,645.47/818,829.61
  6. Step 6: Final answer
    x = 479,765.53

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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.