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Finding the Third Proportional to 305,185 and 662,909

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Solution

The third proportional to 305,185 and 662,909 is: 1,439,940.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,185 : 662,909 = 662,909 : x
  2. Step 2: Convert to fraction form
    305,185/662,909 = 662,909/x
  3. Step 3: Cross multiply
    305,185x = 662,909 × 662,909
  4. Step 4: Simplify right side
    305,185x = 439,448,342,281
  5. Step 5: Solve for x
    x = 439,448,342,281/305,185
  6. Step 6: Final answer
    x = 1,439,940.83

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.