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Finding the Fourth Proportional to 491,603.73, 678,425.73 and 276,751.33

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Solution

The fourth proportional to 491,603.73, 678,425.73 and 276,751.33 is: 381,923.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,603.73 : 678,425.73 = 276,751.33 : x
  2. Step 2: Convert to fraction form
    491,603.73/678,425.73 = 276,751.33/x
  3. Step 3: Cross multiply
    491,603.73x = 678,425.73 × 276,751.33
  4. Step 4: Simplify right side
    491,603.73x = 187,755,224,165.98
  5. Step 5: Solve for x
    x = 187,755,224,165.98/491,603.73
  6. Step 6: Final answer
    x = 381,923.92

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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.