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Finding the Third Proportional to 400,464 and 711,896

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Solution

The third proportional to 400,464 and 711,896 is: 1,265,521.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,464 : 711,896 = 711,896 : x
  2. Step 2: Convert to fraction form
    400,464/711,896 = 711,896/x
  3. Step 3: Cross multiply
    400,464x = 711,896 × 711,896
  4. Step 4: Simplify right side
    400,464x = 506,795,914,816
  5. Step 5: Solve for x
    x = 506,795,914,816/400,464
  6. Step 6: Final answer
    x = 1,265,521.78

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.