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Finding the Third Proportional to 399,608 and 850,080

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Solution

The third proportional to 399,608 and 850,080 is: 1,808,362.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,608 : 850,080 = 850,080 : x
  2. Step 2: Convert to fraction form
    399,608/850,080 = 850,080/x
  3. Step 3: Cross multiply
    399,608x = 850,080 × 850,080
  4. Step 4: Simplify right side
    399,608x = 722,636,006,400
  5. Step 5: Solve for x
    x = 722,636,006,400/399,608
  6. Step 6: Final answer
    x = 1,808,362.21

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.