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Finding the Third Proportional to 348,426 and 521,279

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Solution

The third proportional to 348,426 and 521,279 is: 779,883.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,426 : 521,279 = 521,279 : x
  2. Step 2: Convert to fraction form
    348,426/521,279 = 521,279/x
  3. Step 3: Cross multiply
    348,426x = 521,279 × 521,279
  4. Step 4: Simplify right side
    348,426x = 271,731,795,841
  5. Step 5: Solve for x
    x = 271,731,795,841/348,426
  6. Step 6: Final answer
    x = 779,883.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.