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Finding the Third Proportional to 389,340 and 863,226

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Solution

The third proportional to 389,340 and 863,226 is: 1,913,903.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,340 : 863,226 = 863,226 : x
  2. Step 2: Convert to fraction form
    389,340/863,226 = 863,226/x
  3. Step 3: Cross multiply
    389,340x = 863,226 × 863,226
  4. Step 4: Simplify right side
    389,340x = 745,159,127,076
  5. Step 5: Solve for x
    x = 745,159,127,076/389,340
  6. Step 6: Final answer
    x = 1,913,903.34

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.