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Finding the Third Proportional to 389,192 and 838,424

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Solution

The third proportional to 389,192 and 838,424 is: 1,806,190.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,192 : 838,424 = 838,424 : x
  2. Step 2: Convert to fraction form
    389,192/838,424 = 838,424/x
  3. Step 3: Cross multiply
    389,192x = 838,424 × 838,424
  4. Step 4: Simplify right side
    389,192x = 702,954,803,776
  5. Step 5: Solve for x
    x = 702,954,803,776/389,192
  6. Step 6: Final answer
    x = 1,806,190.27

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.