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Finding the Third Proportional to 442,990.50 and 664,341.75

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Solution

The third proportional to 442,990.50 and 664,341.75 is: 996,296.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,990.50 : 664,341.75 = 664,341.75 : x
  2. Step 2: Convert to fraction form
    442,990.50/664,341.75 = 664,341.75/x
  3. Step 3: Cross multiply
    442,990.50x = 664,341.75 × 664,341.75
  4. Step 4: Simplify right side
    442,990.50x = 441,349,960,793.06
  5. Step 5: Solve for x
    x = 441,349,960,793.06/442,990.50
  6. Step 6: Final answer
    x = 996,296.67

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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.