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Finding the Third Proportional to 310,318 and 669,622

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Solution

The third proportional to 310,318 and 669,622 is: 1,444,948.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,318 : 669,622 = 669,622 : x
  2. Step 2: Convert to fraction form
    310,318/669,622 = 669,622/x
  3. Step 3: Cross multiply
    310,318x = 669,622 × 669,622
  4. Step 4: Simplify right side
    310,318x = 448,393,622,884
  5. Step 5: Solve for x
    x = 448,393,622,884/310,318
  6. Step 6: Final answer
    x = 1,444,948.80

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.