Home / 619,890.80-929,836.20-220,544.60

Finding the Fourth Proportional to 619,890.80, 929,836.20 and 220,544.60

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Solution

The fourth proportional to 619,890.80, 929,836.20 and 220,544.60 is: 330,816.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,890.80 : 929,836.20 = 220,544.60 : x
  2. Step 2: Convert to fraction form
    619,890.80/929,836.20 = 220,544.60/x
  3. Step 3: Cross multiply
    619,890.80x = 929,836.20 × 220,544.60
  4. Step 4: Simplify right side
    619,890.80x = 205,070,352,794.52
  5. Step 5: Solve for x
    x = 205,070,352,794.52/619,890.80
  6. Step 6: Final answer
    x = 330,816.90

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Double scale
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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.