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Finding the Third Proportional to 399,072 and 886,716

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Solution

The third proportional to 399,072 and 886,716 is: 1,970,234.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,072 : 886,716 = 886,716 : x
  2. Step 2: Convert to fraction form
    399,072/886,716 = 886,716/x
  3. Step 3: Cross multiply
    399,072x = 886,716 × 886,716
  4. Step 4: Simplify right side
    399,072x = 786,265,264,656
  5. Step 5: Solve for x
    x = 786,265,264,656/399,072
  6. Step 6: Final answer
    x = 1,970,234.10

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.