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Finding the Third Proportional to 308,924 and 676,889

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Solution

The third proportional to 308,924 and 676,889 is: 1,483,143.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,924 : 676,889 = 676,889 : x
  2. Step 2: Convert to fraction form
    308,924/676,889 = 676,889/x
  3. Step 3: Cross multiply
    308,924x = 676,889 × 676,889
  4. Step 4: Simplify right side
    308,924x = 458,178,718,321
  5. Step 5: Solve for x
    x = 458,178,718,321/308,924
  6. Step 6: Final answer
    x = 1,483,143.81

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.