Home / 491,516.07-678,292-276,657.27

Finding the Fourth Proportional to 491,516.07, 678,292 and 276,657.27

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Solution

The fourth proportional to 491,516.07, 678,292 and 276,657.27 is: 381,786.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,516.07 : 678,292 = 276,657.27 : x
  2. Step 2: Convert to fraction form
    491,516.07/678,292 = 276,657.27/x
  3. Step 3: Cross multiply
    491,516.07x = 678,292 × 276,657.27
  4. Step 4: Simplify right side
    491,516.07x = 187,654,412,982.84
  5. Step 5: Solve for x
    x = 187,654,412,982.84/491,516.07
  6. Step 6: Final answer
    x = 381,786.93

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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.