Home / 861,579.18-1,291,486.68-388,596.69

Finding the Fourth Proportional to 861,579.18, 1,291,486.68 and 388,596.69

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Solution

The fourth proportional to 861,579.18, 1,291,486.68 and 388,596.69 is: 582,497.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,579.18 : 1,291,486.68 = 388,596.69 : x
  2. Step 2: Convert to fraction form
    861,579.18/1,291,486.68 = 388,596.69/x
  3. Step 3: Cross multiply
    861,579.18x = 1,291,486.68 × 388,596.69
  4. Step 4: Simplify right side
    861,579.18x = 501,867,449,027.09
  5. Step 5: Solve for x
    x = 501,867,449,027.09/861,579.18
  6. Step 6: Final answer
    x = 582,497.19

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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.