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Finding the Third Proportional to 327,420 and 705,220

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Solution

The third proportional to 327,420 and 705,220 is: 1,518,951.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,420 : 705,220 = 705,220 : x
  2. Step 2: Convert to fraction form
    327,420/705,220 = 705,220/x
  3. Step 3: Cross multiply
    327,420x = 705,220 × 705,220
  4. Step 4: Simplify right side
    327,420x = 497,335,248,400
  5. Step 5: Solve for x
    x = 497,335,248,400/327,420
  6. Step 6: Final answer
    x = 1,518,951.95

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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.