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Finding the Third Proportional to 399,637 and 855,956

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Solution

The third proportional to 399,637 and 855,956 is: 1,833,315.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,637 : 855,956 = 855,956 : x
  2. Step 2: Convert to fraction form
    399,637/855,956 = 855,956/x
  3. Step 3: Cross multiply
    399,637x = 855,956 × 855,956
  4. Step 4: Simplify right side
    399,637x = 732,660,673,936
  5. Step 5: Solve for x
    x = 732,660,673,936/399,637
  6. Step 6: Final answer
    x = 1,833,315.42

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These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.