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Finding the Third Proportional to 395,157 and 611,286

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Solution

The third proportional to 395,157 and 611,286 is: 945,625.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,157 : 611,286 = 611,286 : x
  2. Step 2: Convert to fraction form
    395,157/611,286 = 611,286/x
  3. Step 3: Cross multiply
    395,157x = 611,286 × 611,286
  4. Step 4: Simplify right side
    395,157x = 373,670,573,796
  5. Step 5: Solve for x
    x = 373,670,573,796/395,157
  6. Step 6: Final answer
    x = 945,625.60

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.