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Finding the Third Proportional to 306,846 and 656,340

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Solution

The third proportional to 306,846 and 656,340 is: 1,403,903.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,846 : 656,340 = 656,340 : x
  2. Step 2: Convert to fraction form
    306,846/656,340 = 656,340/x
  3. Step 3: Cross multiply
    306,846x = 656,340 × 656,340
  4. Step 4: Simplify right side
    306,846x = 430,782,195,600
  5. Step 5: Solve for x
    x = 430,782,195,600/306,846
  6. Step 6: Final answer
    x = 1,403,903.57

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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.