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Finding the Third Proportional to 351,990.50 and 720,383

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Solution

The third proportional to 351,990.50 and 720,383 is: 1,474,334.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,990.50 : 720,383 = 720,383 : x
  2. Step 2: Convert to fraction form
    351,990.50/720,383 = 720,383/x
  3. Step 3: Cross multiply
    351,990.50x = 720,383 × 720,383
  4. Step 4: Simplify right side
    351,990.50x = 518,951,666,689
  5. Step 5: Solve for x
    x = 518,951,666,689/351,990.50
  6. Step 6: Final answer
    x = 1,474,334.30

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.