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Finding the Fourth Proportional to 491,295.27, 678,000.73 and 276,442.98

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Solution

The fourth proportional to 491,295.27, 678,000.73 and 276,442.98 is: 381,498.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,295.27 : 678,000.73 = 276,442.98 : x
  2. Step 2: Convert to fraction form
    491,295.27/678,000.73 = 276,442.98/x
  3. Step 3: Cross multiply
    491,295.27x = 678,000.73 × 276,442.98
  4. Step 4: Simplify right side
    491,295.27x = 187,428,542,243.38
  5. Step 5: Solve for x
    x = 187,428,542,243.38/491,295.27
  6. Step 6: Final answer
    x = 381,498.77

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1.5x scale

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.