Home / 1,311,141.35-1,966,709.30-412,661.61

Finding the Fourth Proportional to 1,311,141.35, 1,966,709.30 and 412,661.61

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Solution

The fourth proportional to 1,311,141.35, 1,966,709.30 and 412,661.61 is: 618,991.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,141.35 : 1,966,709.30 = 412,661.61 : x
  2. Step 2: Convert to fraction form
    1,311,141.35/1,966,709.30 = 412,661.61/x
  3. Step 3: Cross multiply
    1,311,141.35x = 1,966,709.30 × 412,661.61
  4. Step 4: Simplify right side
    1,311,141.35x = 811,585,424,076.67
  5. Step 5: Solve for x
    x = 811,585,424,076.67/1,311,141.35
  6. Step 6: Final answer
    x = 618,991.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.