Home / 664,490.20-996,735.30-309,540.10

Finding the Fourth Proportional to 664,490.20, 996,735.30 and 309,540.10

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Solution

The fourth proportional to 664,490.20, 996,735.30 and 309,540.10 is: 464,310.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,490.20 : 996,735.30 = 309,540.10 : x
  2. Step 2: Convert to fraction form
    664,490.20/996,735.30 = 309,540.10/x
  3. Step 3: Cross multiply
    664,490.20x = 996,735.30 × 309,540.10
  4. Step 4: Simplify right side
    664,490.20x = 308,529,544,435.53
  5. Step 5: Solve for x
    x = 308,529,544,435.53/664,490.20
  6. Step 6: Final answer
    x = 464,310.15

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Similar ratio
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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.