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Finding the Fourth Proportional to 381,646.77, 575,213.39 and 328,974.50

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Solution

The fourth proportional to 381,646.77, 575,213.39 and 328,974.50 is: 495,826.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,646.77 : 575,213.39 = 328,974.50 : x
  2. Step 2: Convert to fraction form
    381,646.77/575,213.39 = 328,974.50/x
  3. Step 3: Cross multiply
    381,646.77x = 575,213.39 × 328,974.50
  4. Step 4: Simplify right side
    381,646.77x = 189,230,532,847.62
  5. Step 5: Solve for x
    x = 189,230,532,847.62/381,646.77
  6. Step 6: Final answer
    x = 495,826.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.