Home / 664,234.20-996,642.90-309,065.40

Finding the Fourth Proportional to 664,234.20, 996,642.90 and 309,065.40

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Solution

The fourth proportional to 664,234.20, 996,642.90 and 309,065.40 is: 463,733.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,234.20 : 996,642.90 = 309,065.40 : x
  2. Step 2: Convert to fraction form
    664,234.20/996,642.90 = 309,065.40/x
  3. Step 3: Cross multiply
    664,234.20x = 996,642.90 × 309,065.40
  4. Step 4: Simplify right side
    664,234.20x = 308,027,836,545.66
  5. Step 5: Solve for x
    x = 308,027,836,545.66/664,234.20
  6. Step 6: Final answer
    x = 463,733.78

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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.