Home / 427,847.04-639,170.32-276,857.28

Finding the Fourth Proportional to 427,847.04, 639,170.32 and 276,857.28

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Solution

The fourth proportional to 427,847.04, 639,170.32 and 276,857.28 is: 413,603.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,847.04 : 639,170.32 = 276,857.28 : x
  2. Step 2: Convert to fraction form
    427,847.04/639,170.32 = 276,857.28/x
  3. Step 3: Cross multiply
    427,847.04x = 639,170.32 × 276,857.28
  4. Step 4: Simplify right side
    427,847.04x = 176,958,956,251.93
  5. Step 5: Solve for x
    x = 176,958,956,251.93/427,847.04
  6. Step 6: Final answer
    x = 413,603.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.