Home / 664,518.20-996,777.30-398,141.60

Finding the Fourth Proportional to 664,518.20, 996,777.30 and 398,141.60

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Solution

The fourth proportional to 664,518.20, 996,777.30 and 398,141.60 is: 597,212.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,518.20 : 996,777.30 = 398,141.60 : x
  2. Step 2: Convert to fraction form
    664,518.20/996,777.30 = 398,141.60/x
  3. Step 3: Cross multiply
    664,518.20x = 996,777.30 × 398,141.60
  4. Step 4: Simplify right side
    664,518.20x = 396,858,509,065.68
  5. Step 5: Solve for x
    x = 396,858,509,065.68/664,518.20
  6. Step 6: Final answer
    x = 597,212.40

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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.