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Finding the Third Proportional to 399,084 and 886,740

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Solution

The third proportional to 399,084 and 886,740 is: 1,970,281.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,084 : 886,740 = 886,740 : x
  2. Step 2: Convert to fraction form
    399,084/886,740 = 886,740/x
  3. Step 3: Cross multiply
    399,084x = 886,740 × 886,740
  4. Step 4: Simplify right side
    399,084x = 786,307,827,600
  5. Step 5: Solve for x
    x = 786,307,827,600/399,084
  6. Step 6: Final answer
    x = 1,970,281.51

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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.