Home / 656,166.30-984,249.45-389,789.70

Finding the Fourth Proportional to 656,166.30, 984,249.45 and 389,789.70

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Solution

The fourth proportional to 656,166.30, 984,249.45 and 389,789.70 is: 584,684.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,166.30 : 984,249.45 = 389,789.70 : x
  2. Step 2: Convert to fraction form
    656,166.30/984,249.45 = 389,789.70/x
  3. Step 3: Cross multiply
    656,166.30x = 984,249.45 × 389,789.70
  4. Step 4: Simplify right side
    656,166.30x = 383,650,297,840.67
  5. Step 5: Solve for x
    x = 383,650,297,840.67/656,166.30
  6. Step 6: Final answer
    x = 584,684.55

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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.