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Finding the Third Proportional to 620,420 and 995,418

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Solution

The third proportional to 620,420 and 995,418 is: 1,597,074.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,420 : 995,418 = 995,418 : x
  2. Step 2: Convert to fraction form
    620,420/995,418 = 995,418/x
  3. Step 3: Cross multiply
    620,420x = 995,418 × 995,418
  4. Step 4: Simplify right side
    620,420x = 990,856,994,724
  5. Step 5: Solve for x
    x = 990,856,994,724/620,420
  6. Step 6: Final answer
    x = 1,597,074.55

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.