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Finding the Third Proportional to 438,228 and 626,238

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Solution

The third proportional to 438,228 and 626,238 is: 894,908.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,228 : 626,238 = 626,238 : x
  2. Step 2: Convert to fraction form
    438,228/626,238 = 626,238/x
  3. Step 3: Cross multiply
    438,228x = 626,238 × 626,238
  4. Step 4: Simplify right side
    438,228x = 392,174,032,644
  5. Step 5: Solve for x
    x = 392,174,032,644/438,228
  6. Step 6: Final answer
    x = 894,908.66

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.