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Finding the Third Proportional to 297,070 and 641,486

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Solution

The third proportional to 297,070 and 641,486 is: 1,385,209.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,070 : 641,486 = 641,486 : x
  2. Step 2: Convert to fraction form
    297,070/641,486 = 641,486/x
  3. Step 3: Cross multiply
    297,070x = 641,486 × 641,486
  4. Step 4: Simplify right side
    297,070x = 411,504,288,196
  5. Step 5: Solve for x
    x = 411,504,288,196/297,070
  6. Step 6: Final answer
    x = 1,385,209.84

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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.