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Finding the Fourth Proportional to 491,392.19, 678,065.54 and 276,526.73

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Solution

The fourth proportional to 491,392.19, 678,065.54 and 276,526.73 is: 381,575.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,392.19 : 678,065.54 = 276,526.73 : x
  2. Step 2: Convert to fraction form
    491,392.19/678,065.54 = 276,526.73/x
  3. Step 3: Cross multiply
    491,392.19x = 678,065.54 × 276,526.73
  4. Step 4: Simplify right side
    491,392.19x = 187,503,246,814.41
  5. Step 5: Solve for x
    x = 187,503,246,814.41/491,392.19
  6. Step 6: Final answer
    x = 381,575.55

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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.