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Finding the Third Proportional to 18,981,409 and 28,347,731

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Solution

The third proportional to 18,981,409 and 28,347,731 is: 42,335,837.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981,409 : 28,347,731 = 28,347,731 : x
  2. Step 2: Convert to fraction form
    18,981,409/28,347,731 = 28,347,731/x
  3. Step 3: Cross multiply
    18,981,409x = 28,347,731 × 28,347,731
  4. Step 4: Simplify right side
    18,981,409x = 803,593,852,848,361
  5. Step 5: Solve for x
    x = 803,593,852,848,361/18,981,409
  6. Step 6: Final answer
    x = 42,335,837.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.