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Finding the Third Proportional to 386,767 and 830,669

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Solution

The third proportional to 386,767 and 830,669 is: 1,784,048.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,767 : 830,669 = 830,669 : x
  2. Step 2: Convert to fraction form
    386,767/830,669 = 830,669/x
  3. Step 3: Cross multiply
    386,767x = 830,669 × 830,669
  4. Step 4: Simplify right side
    386,767x = 690,010,987,561
  5. Step 5: Solve for x
    x = 690,010,987,561/386,767
  6. Step 6: Final answer
    x = 1,784,048.24

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.