Home / 861,321.50-1,291,993.78-270,345.50

Finding the Fourth Proportional to 861,321.50, 1,291,993.78 and 270,345.50

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Solution

The fourth proportional to 861,321.50, 1,291,993.78 and 270,345.50 is: 405,521.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,321.50 : 1,291,993.78 = 270,345.50 : x
  2. Step 2: Convert to fraction form
    861,321.50/1,291,993.78 = 270,345.50/x
  3. Step 3: Cross multiply
    861,321.50x = 1,291,993.78 × 270,345.50
  4. Step 4: Simplify right side
    861,321.50x = 349,284,704,450.99
  5. Step 5: Solve for x
    x = 349,284,704,450.99/861,321.50
  6. Step 6: Final answer
    x = 405,521.87

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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.