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Finding the Third Proportional to 557,928 and 716,364

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Solution

The third proportional to 557,928 and 716,364 is: 919,791.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,928 : 716,364 = 716,364 : x
  2. Step 2: Convert to fraction form
    557,928/716,364 = 716,364/x
  3. Step 3: Cross multiply
    557,928x = 716,364 × 716,364
  4. Step 4: Simplify right side
    557,928x = 513,177,380,496
  5. Step 5: Solve for x
    x = 513,177,380,496/557,928
  6. Step 6: Final answer
    x = 919,791.41

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.