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Finding the Third Proportional to 513,121 and 804,930

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Solution

The third proportional to 513,121 and 804,930 is: 1,262,689.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,121 : 804,930 = 804,930 : x
  2. Step 2: Convert to fraction form
    513,121/804,930 = 804,930/x
  3. Step 3: Cross multiply
    513,121x = 804,930 × 804,930
  4. Step 4: Simplify right side
    513,121x = 647,912,304,900
  5. Step 5: Solve for x
    x = 647,912,304,900/513,121
  6. Step 6: Final answer
    x = 1,262,689.12

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.