Home / 538,985.63-809,039.20-396,991.24

Finding the Fourth Proportional to 538,985.63, 809,039.20 and 396,991.24

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Solution

The fourth proportional to 538,985.63, 809,039.20 and 396,991.24 is: 595,899.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,985.63 : 809,039.20 = 396,991.24 : x
  2. Step 2: Convert to fraction form
    538,985.63/809,039.20 = 396,991.24/x
  3. Step 3: Cross multiply
    538,985.63x = 809,039.20 × 396,991.24
  4. Step 4: Simplify right side
    538,985.63x = 321,181,471,171.41
  5. Step 5: Solve for x
    x = 321,181,471,171.41/538,985.63
  6. Step 6: Final answer
    x = 595,899.88

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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.