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Finding the Third Proportional to 301,274 and 642,580

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Solution

The third proportional to 301,274 and 642,580 is: 1,370,543.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,274 : 642,580 = 642,580 : x
  2. Step 2: Convert to fraction form
    301,274/642,580 = 642,580/x
  3. Step 3: Cross multiply
    301,274x = 642,580 × 642,580
  4. Step 4: Simplify right side
    301,274x = 412,909,056,400
  5. Step 5: Solve for x
    x = 412,909,056,400/301,274
  6. Step 6: Final answer
    x = 1,370,543.28

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.