Home / 491,641.70-678,436.53-276,773.18

Finding the Fourth Proportional to 491,641.70, 678,436.53 and 276,773.18

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Solution

The fourth proportional to 491,641.70, 678,436.53 and 276,773.18 is: 381,930.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,641.70 : 678,436.53 = 276,773.18 : x
  2. Step 2: Convert to fraction form
    491,641.70/678,436.53 = 276,773.18/x
  3. Step 3: Cross multiply
    491,641.70x = 678,436.53 × 276,773.18
  4. Step 4: Simplify right side
    491,641.70x = 187,773,035,836.27
  5. Step 5: Solve for x
    x = 187,773,035,836.27/491,641.70
  6. Step 6: Final answer
    x = 381,930.65

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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.