Home / 619,882.80-929,824.20-438,799.20

Finding the Fourth Proportional to 619,882.80, 929,824.20 and 438,799.20

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Solution

The fourth proportional to 619,882.80, 929,824.20 and 438,799.20 is: 658,198.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,882.80 : 929,824.20 = 438,799.20 : x
  2. Step 2: Convert to fraction form
    619,882.80/929,824.20 = 438,799.20/x
  3. Step 3: Cross multiply
    619,882.80x = 929,824.20 × 438,799.20
  4. Step 4: Simplify right side
    619,882.80x = 408,006,115,100.64
  5. Step 5: Solve for x
    x = 408,006,115,100.64/619,882.80
  6. Step 6: Final answer
    x = 658,198.80

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Similar ratio
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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.