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Finding the Third Proportional to 405,240 and 881,831

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Solution

The third proportional to 405,240 and 881,831 is: 1,918,926.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,240 : 881,831 = 881,831 : x
  2. Step 2: Convert to fraction form
    405,240/881,831 = 881,831/x
  3. Step 3: Cross multiply
    405,240x = 881,831 × 881,831
  4. Step 4: Simplify right side
    405,240x = 777,625,912,561
  5. Step 5: Solve for x
    x = 777,625,912,561/405,240
  6. Step 6: Final answer
    x = 1,918,926.84

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.