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Finding the Third Proportional to 450,187 and 686,714

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Solution

The third proportional to 450,187 and 686,714 is: 1,047,511.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,187 : 686,714 = 686,714 : x
  2. Step 2: Convert to fraction form
    450,187/686,714 = 686,714/x
  3. Step 3: Cross multiply
    450,187x = 686,714 × 686,714
  4. Step 4: Simplify right side
    450,187x = 471,576,117,796
  5. Step 5: Solve for x
    x = 471,576,117,796/450,187
  6. Step 6: Final answer
    x = 1,047,511.63

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.