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Finding the Third Proportional to 306,774 and 656,190

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Solution

The third proportional to 306,774 and 656,190 is: 1,403,591.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,774 : 656,190 = 656,190 : x
  2. Step 2: Convert to fraction form
    306,774/656,190 = 656,190/x
  3. Step 3: Cross multiply
    306,774x = 656,190 × 656,190
  4. Step 4: Simplify right side
    306,774x = 430,585,316,100
  5. Step 5: Solve for x
    x = 430,585,316,100/306,774
  6. Step 6: Final answer
    x = 1,403,591.30

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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.