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Finding the Fourth Proportional to 568,910.58, 785,099.28 and 310,791.12

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Solution

The fourth proportional to 568,910.58, 785,099.28 and 310,791.12 is: 428,893.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,910.58 : 785,099.28 = 310,791.12 : x
  2. Step 2: Convert to fraction form
    568,910.58/785,099.28 = 310,791.12/x
  3. Step 3: Cross multiply
    568,910.58x = 785,099.28 × 310,791.12
  4. Step 4: Simplify right side
    568,910.58x = 244,001,884,542.39
  5. Step 5: Solve for x
    x = 244,001,884,542.39/568,910.58
  6. Step 6: Final answer
    x = 428,893.21

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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.