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Finding the Third Proportional to 381,145 and 828,717

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Solution

The third proportional to 381,145 and 828,717 is: 1,801,865.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,145 : 828,717 = 828,717 : x
  2. Step 2: Convert to fraction form
    381,145/828,717 = 828,717/x
  3. Step 3: Cross multiply
    381,145x = 828,717 × 828,717
  4. Step 4: Simplify right side
    381,145x = 686,771,866,089
  5. Step 5: Solve for x
    x = 686,771,866,089/381,145
  6. Step 6: Final answer
    x = 1,801,865.08

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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.