Home / 664,844.20-997,266.30-398,467.60

Finding the Fourth Proportional to 664,844.20, 997,266.30 and 398,467.60

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Solution

The fourth proportional to 664,844.20, 997,266.30 and 398,467.60 is: 597,701.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,844.20 : 997,266.30 = 398,467.60 : x
  2. Step 2: Convert to fraction form
    664,844.20/997,266.30 = 398,467.60/x
  3. Step 3: Cross multiply
    664,844.20x = 997,266.30 × 398,467.60
  4. Step 4: Simplify right side
    664,844.20x = 397,378,309,121.88
  5. Step 5: Solve for x
    x = 397,378,309,121.88/664,844.20
  6. Step 6: Final answer
    x = 597,701.40

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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.