Home / 687,879.22-949,268.37-381,954.10

Finding the Fourth Proportional to 687,879.22, 949,268.37 and 381,954.10

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Solution

The fourth proportional to 687,879.22, 949,268.37 and 381,954.10 is: 527,093.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,879.22 : 949,268.37 = 381,954.10 : x
  2. Step 2: Convert to fraction form
    687,879.22/949,268.37 = 381,954.10/x
  3. Step 3: Cross multiply
    687,879.22x = 949,268.37 × 381,954.10
  4. Step 4: Simplify right side
    687,879.22x = 362,576,945,921.82
  5. Step 5: Solve for x
    x = 362,576,945,921.82/687,879.22
  6. Step 6: Final answer
    x = 527,093.91

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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.