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Finding the Third Proportional to 389,959 and 843,886

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Solution

The third proportional to 389,959 and 843,886 is: 1,826,201.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,959 : 843,886 = 843,886 : x
  2. Step 2: Convert to fraction form
    389,959/843,886 = 843,886/x
  3. Step 3: Cross multiply
    389,959x = 843,886 × 843,886
  4. Step 4: Simplify right side
    389,959x = 712,143,580,996
  5. Step 5: Solve for x
    x = 712,143,580,996/389,959
  6. Step 6: Final answer
    x = 1,826,201.17

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.