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Finding the Third Proportional to 314,307 and 678,834

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Solution

The third proportional to 314,307 and 678,834 is: 1,466,132.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,307 : 678,834 = 678,834 : x
  2. Step 2: Convert to fraction form
    314,307/678,834 = 678,834/x
  3. Step 3: Cross multiply
    314,307x = 678,834 × 678,834
  4. Step 4: Simplify right side
    314,307x = 460,815,599,556
  5. Step 5: Solve for x
    x = 460,815,599,556/314,307
  6. Step 6: Final answer
    x = 1,466,132.16

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.