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Finding the Third Proportional to 283,456 and 438,878

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Solution

The third proportional to 283,456 and 438,878 is: 679,519.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,456 : 438,878 = 438,878 : x
  2. Step 2: Convert to fraction form
    283,456/438,878 = 438,878/x
  3. Step 3: Cross multiply
    283,456x = 438,878 × 438,878
  4. Step 4: Simplify right side
    283,456x = 192,613,898,884
  5. Step 5: Solve for x
    x = 192,613,898,884/283,456
  6. Step 6: Final answer
    x = 679,519.57

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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.