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Finding the Fourth Proportional to 664,996.10, 996,838.05 and 327,760.70

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Solution

The fourth proportional to 664,996.10, 996,838.05 and 327,760.70 is: 491,317.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,996.10 : 996,838.05 = 327,760.70 : x
  2. Step 2: Convert to fraction form
    664,996.10/996,838.05 = 327,760.70/x
  3. Step 3: Cross multiply
    664,996.10x = 996,838.05 × 327,760.70
  4. Step 4: Simplify right side
    664,996.10x = 326,724,337,054.64
  5. Step 5: Solve for x
    x = 326,724,337,054.64/664,996.10
  6. Step 6: Final answer
    x = 491,317.67

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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.