Home / 861,857.94-1,291,039.68-399,586.59

Finding the Fourth Proportional to 861,857.94, 1,291,039.68 and 399,586.59

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Solution

The fourth proportional to 861,857.94, 1,291,039.68 and 399,586.59 is: 598,569.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,857.94 : 1,291,039.68 = 399,586.59 : x
  2. Step 2: Convert to fraction form
    861,857.94/1,291,039.68 = 399,586.59/x
  3. Step 3: Cross multiply
    861,857.94x = 1,291,039.68 × 399,586.59
  4. Step 4: Simplify right side
    861,857.94x = 515,882,143,285.89
  5. Step 5: Solve for x
    x = 515,882,143,285.89/861,857.94
  6. Step 6: Final answer
    x = 598,569.81

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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.