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Finding the Third Proportional to 415,764 and 627,390

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Solution

The third proportional to 415,764 and 627,390 is: 946,734.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,764 : 627,390 = 627,390 : x
  2. Step 2: Convert to fraction form
    415,764/627,390 = 627,390/x
  3. Step 3: Cross multiply
    415,764x = 627,390 × 627,390
  4. Step 4: Simplify right side
    415,764x = 393,618,212,100
  5. Step 5: Solve for x
    x = 393,618,212,100/415,764
  6. Step 6: Final answer
    x = 946,734.72

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.