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Finding the Third Proportional to 285,939 and 618,955

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Solution

The third proportional to 285,939 and 618,955 is: 1,339,814.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,939 : 618,955 = 618,955 : x
  2. Step 2: Convert to fraction form
    285,939/618,955 = 618,955/x
  3. Step 3: Cross multiply
    285,939x = 618,955 × 618,955
  4. Step 4: Simplify right side
    285,939x = 383,105,292,025
  5. Step 5: Solve for x
    x = 383,105,292,025/285,939
  6. Step 6: Final answer
    x = 1,339,814.76

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.