Home / 811,196.56-1,215,936.77-305,538.75

Finding the Fourth Proportional to 811,196.56, 1,215,936.77 and 305,538.75

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Solution

The fourth proportional to 811,196.56, 1,215,936.77 and 305,538.75 is: 457,984.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,196.56 : 1,215,936.77 = 305,538.75 : x
  2. Step 2: Convert to fraction form
    811,196.56/1,215,936.77 = 305,538.75/x
  3. Step 3: Cross multiply
    811,196.56x = 1,215,936.77 × 305,538.75
  4. Step 4: Simplify right side
    811,196.56x = 371,515,799,257.14
  5. Step 5: Solve for x
    x = 371,515,799,257.14/811,196.56
  6. Step 6: Final answer
    x = 457,984.93

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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.