Home / 664,311.40-996,467.10-383,500.60

Finding the Fourth Proportional to 664,311.40, 996,467.10 and 383,500.60

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Solution

The fourth proportional to 664,311.40, 996,467.10 and 383,500.60 is: 575,250.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,311.40 : 996,467.10 = 383,500.60 : x
  2. Step 2: Convert to fraction form
    664,311.40/996,467.10 = 383,500.60/x
  3. Step 3: Cross multiply
    664,311.40x = 996,467.10 × 383,500.60
  4. Step 4: Simplify right side
    664,311.40x = 382,145,730,730.26
  5. Step 5: Solve for x
    x = 382,145,730,730.26/664,311.40
  6. Step 6: Final answer
    x = 575,250.90

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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.