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Finding the Third Proportional to 389,116 and 838,263

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Solution

The third proportional to 389,116 and 838,263 is: 1,805,849.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,116 : 838,263 = 838,263 : x
  2. Step 2: Convert to fraction form
    389,116/838,263 = 838,263/x
  3. Step 3: Cross multiply
    389,116x = 838,263 × 838,263
  4. Step 4: Simplify right side
    389,116x = 702,684,857,169
  5. Step 5: Solve for x
    x = 702,684,857,169/389,116
  6. Step 6: Final answer
    x = 1,805,849.30

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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.