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Finding the Third Proportional to 307,108 and 664,520

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Solution

The third proportional to 307,108 and 664,520 is: 1,437,887.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,108 : 664,520 = 664,520 : x
  2. Step 2: Convert to fraction form
    307,108/664,520 = 664,520/x
  3. Step 3: Cross multiply
    307,108x = 664,520 × 664,520
  4. Step 4: Simplify right side
    307,108x = 441,586,830,400
  5. Step 5: Solve for x
    x = 441,586,830,400/307,108
  6. Step 6: Final answer
    x = 1,437,887.75

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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.