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Finding the Third Proportional to 618,520 and 955,716

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Solution

The third proportional to 618,520 and 955,716 is: 1,476,739.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,520 : 955,716 = 955,716 : x
  2. Step 2: Convert to fraction form
    618,520/955,716 = 955,716/x
  3. Step 3: Cross multiply
    618,520x = 955,716 × 955,716
  4. Step 4: Simplify right side
    618,520x = 913,393,072,656
  5. Step 5: Solve for x
    x = 913,393,072,656/618,520
  6. Step 6: Final answer
    x = 1,476,739.75

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.