Home / 1,381,486.78-1,906,510.58-769,639.19

Finding the Fourth Proportional to 1,381,486.78, 1,906,510.58 and 769,639.19

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Solution

The fourth proportional to 1,381,486.78, 1,906,510.58 and 769,639.19 is: 1,062,134.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,486.78 : 1,906,510.58 = 769,639.19 : x
  2. Step 2: Convert to fraction form
    1,381,486.78/1,906,510.58 = 769,639.19/x
  3. Step 3: Cross multiply
    1,381,486.78x = 1,906,510.58 × 769,639.19
  4. Step 4: Simplify right side
    1,381,486.78x = 1,467,325,260,441.73
  5. Step 5: Solve for x
    x = 1,467,325,260,441.73/1,381,486.78
  6. Step 6: Final answer
    x = 1,062,134.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.