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Finding the Third Proportional to 311,626.50 and 669,800.25

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Solution

The third proportional to 311,626.50 and 669,800.25 is: 1,439,647.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,626.50 : 669,800.25 = 669,800.25 : x
  2. Step 2: Convert to fraction form
    311,626.50/669,800.25 = 669,800.25/x
  3. Step 3: Cross multiply
    311,626.50x = 669,800.25 × 669,800.25
  4. Step 4: Simplify right side
    311,626.50x = 448,632,374,900.06
  5. Step 5: Solve for x
    x = 448,632,374,900.06/311,626.50
  6. Step 6: Final answer
    x = 1,439,647.70

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.