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Finding the Third Proportional to 317,183.50 and 686,956

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Solution

The third proportional to 317,183.50 and 686,956 is: 1,487,809.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,183.50 : 686,956 = 686,956 : x
  2. Step 2: Convert to fraction form
    317,183.50/686,956 = 686,956/x
  3. Step 3: Cross multiply
    317,183.50x = 686,956 × 686,956
  4. Step 4: Simplify right side
    317,183.50x = 471,908,545,936
  5. Step 5: Solve for x
    x = 471,908,545,936/317,183.50
  6. Step 6: Final answer
    x = 1,487,809.25

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.