Home / 855,761.51-1,283,844.69-279,381.71

Finding the Fourth Proportional to 855,761.51, 1,283,844.69 and 279,381.71

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Solution

The fourth proportional to 855,761.51, 1,283,844.69 and 279,381.71 is: 419,138.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,761.51 : 1,283,844.69 = 279,381.71 : x
  2. Step 2: Convert to fraction form
    855,761.51/1,283,844.69 = 279,381.71/x
  3. Step 3: Cross multiply
    855,761.51x = 1,283,844.69 × 279,381.71
  4. Step 4: Simplify right side
    855,761.51x = 358,682,718,447.40
  5. Step 5: Solve for x
    x = 358,682,718,447.40/855,761.51
  6. Step 6: Final answer
    x = 419,138.65

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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.