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Finding the Fourth Proportional to 450,791.15, 622,141.45 and 287,453.66

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Solution

The fourth proportional to 450,791.15, 622,141.45 and 287,453.66 is: 396,717.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,791.15 : 622,141.45 = 287,453.66 : x
  2. Step 2: Convert to fraction form
    450,791.15/622,141.45 = 287,453.66/x
  3. Step 3: Cross multiply
    450,791.15x = 622,141.45 × 287,453.66
  4. Step 4: Simplify right side
    450,791.15x = 178,836,833,010.87
  5. Step 5: Solve for x
    x = 178,836,833,010.87/450,791.15
  6. Step 6: Final answer
    x = 396,717.72

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1.5x scale

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.