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Finding the Third Proportional to 386,217 and 807,714

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Solution

The third proportional to 386,217 and 807,714 is: 1,689,210.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,217 : 807,714 = 807,714 : x
  2. Step 2: Convert to fraction form
    386,217/807,714 = 807,714/x
  3. Step 3: Cross multiply
    386,217x = 807,714 × 807,714
  4. Step 4: Simplify right side
    386,217x = 652,401,905,796
  5. Step 5: Solve for x
    x = 652,401,905,796/386,217
  6. Step 6: Final answer
    x = 1,689,210.74

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.