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Finding the Third Proportional to 338,278 and 743,515

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Solution

The third proportional to 338,278 and 743,515 is: 1,634,201.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,278 : 743,515 = 743,515 : x
  2. Step 2: Convert to fraction form
    338,278/743,515 = 743,515/x
  3. Step 3: Cross multiply
    338,278x = 743,515 × 743,515
  4. Step 4: Simplify right side
    338,278x = 552,814,555,225
  5. Step 5: Solve for x
    x = 552,814,555,225/338,278
  6. Step 6: Final answer
    x = 1,634,201.91

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.