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Finding the Third Proportional to 313,078 and 676,178

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Solution

The third proportional to 313,078 and 676,178 is: 1,460,392.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,078 : 676,178 = 676,178 : x
  2. Step 2: Convert to fraction form
    313,078/676,178 = 676,178/x
  3. Step 3: Cross multiply
    313,078x = 676,178 × 676,178
  4. Step 4: Simplify right side
    313,078x = 457,216,687,684
  5. Step 5: Solve for x
    x = 457,216,687,684/313,078
  6. Step 6: Final answer
    x = 1,460,392.26

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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.