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Finding the Third Proportional to 306,856 and 656,359

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Solution

The third proportional to 306,856 and 656,359 is: 1,403,939.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,856 : 656,359 = 656,359 : x
  2. Step 2: Convert to fraction form
    306,856/656,359 = 656,359/x
  3. Step 3: Cross multiply
    306,856x = 656,359 × 656,359
  4. Step 4: Simplify right side
    306,856x = 430,807,136,881
  5. Step 5: Solve for x
    x = 430,807,136,881/306,856
  6. Step 6: Final answer
    x = 1,403,939.10

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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.