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Finding the Third Proportional to 291,207 and 622,897

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Solution

The third proportional to 291,207 and 622,897 is: 1,332,387.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,207 : 622,897 = 622,897 : x
  2. Step 2: Convert to fraction form
    291,207/622,897 = 622,897/x
  3. Step 3: Cross multiply
    291,207x = 622,897 × 622,897
  4. Step 4: Simplify right side
    291,207x = 388,000,672,609
  5. Step 5: Solve for x
    x = 388,000,672,609/291,207
  6. Step 6: Final answer
    x = 1,332,387.86

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.