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Finding the Third Proportional to 418,346 and 628,470

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Solution

The third proportional to 418,346 and 628,470 is: 944,133.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,346 : 628,470 = 628,470 : x
  2. Step 2: Convert to fraction form
    418,346/628,470 = 628,470/x
  3. Step 3: Cross multiply
    418,346x = 628,470 × 628,470
  4. Step 4: Simplify right side
    418,346x = 394,974,540,900
  5. Step 5: Solve for x
    x = 394,974,540,900/418,346
  6. Step 6: Final answer
    x = 944,133.66

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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.