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Finding the Third Proportional to 281,816 and 624,396

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Solution

The third proportional to 281,816 and 624,396 is: 1,383,421.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,816 : 624,396 = 624,396 : x
  2. Step 2: Convert to fraction form
    281,816/624,396 = 624,396/x
  3. Step 3: Cross multiply
    281,816x = 624,396 × 624,396
  4. Step 4: Simplify right side
    281,816x = 389,870,364,816
  5. Step 5: Solve for x
    x = 389,870,364,816/281,816
  6. Step 6: Final answer
    x = 1,383,421.68

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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.