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Finding the Third Proportional to 373,988 and 815,560

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Solution

The third proportional to 373,988 and 815,560 is: 1,778,501.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,988 : 815,560 = 815,560 : x
  2. Step 2: Convert to fraction form
    373,988/815,560 = 815,560/x
  3. Step 3: Cross multiply
    373,988x = 815,560 × 815,560
  4. Step 4: Simplify right side
    373,988x = 665,138,113,600
  5. Step 5: Solve for x
    x = 665,138,113,600/373,988
  6. Step 6: Final answer
    x = 1,778,501.22

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.