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Finding the Third Proportional to 305,910 and 656,078

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Solution

The third proportional to 305,910 and 656,078 is: 1,407,075.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,910 : 656,078 = 656,078 : x
  2. Step 2: Convert to fraction form
    305,910/656,078 = 656,078/x
  3. Step 3: Cross multiply
    305,910x = 656,078 × 656,078
  4. Step 4: Simplify right side
    305,910x = 430,438,342,084
  5. Step 5: Solve for x
    x = 430,438,342,084/305,910
  6. Step 6: Final answer
    x = 1,407,075.09

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.