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Finding the Third Proportional to 426,286 and 636,504

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Solution

The third proportional to 426,286 and 636,504 is: 950,388.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,286 : 636,504 = 636,504 : x
  2. Step 2: Convert to fraction form
    426,286/636,504 = 636,504/x
  3. Step 3: Cross multiply
    426,286x = 636,504 × 636,504
  4. Step 4: Simplify right side
    426,286x = 405,137,342,016
  5. Step 5: Solve for x
    x = 405,137,342,016/426,286
  6. Step 6: Final answer
    x = 950,388.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.