Home / 521,939.08-720,231.96-289,372.24

Finding the Fourth Proportional to 521,939.08, 720,231.96 and 289,372.24

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Solution

The fourth proportional to 521,939.08, 720,231.96 and 289,372.24 is: 399,309.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,939.08 : 720,231.96 = 289,372.24 : x
  2. Step 2: Convert to fraction form
    521,939.08/720,231.96 = 289,372.24/x
  3. Step 3: Cross multiply
    521,939.08x = 720,231.96 × 289,372.24
  4. Step 4: Simplify right side
    521,939.08x = 208,415,135,584.79
  5. Step 5: Solve for x
    x = 208,415,135,584.79/521,939.08
  6. Step 6: Final answer
    x = 399,309.31

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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.