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Finding the Third Proportional to 818,438.91 and 1,238,980.78

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Solution

The third proportional to 818,438.91 and 1,238,980.78 is: 1,875,611.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,438.91 : 1,238,980.78 = 1,238,980.78 : x
  2. Step 2: Convert to fraction form
    818,438.91/1,238,980.78 = 1,238,980.78/x
  3. Step 3: Cross multiply
    818,438.91x = 1,238,980.78 × 1,238,980.78
  4. Step 4: Simplify right side
    818,438.91x = 1,535,073,376,306.86
  5. Step 5: Solve for x
    x = 1,535,073,376,306.86/818,438.91
  6. Step 6: Final answer
    x = 1,875,611.44

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.