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Finding the Fourth Proportional to 491,411.63, 678,035.85 and 276,473.27

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Solution

The fourth proportional to 491,411.63, 678,035.85 and 276,473.27 is: 381,469.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,411.63 : 678,035.85 = 276,473.27 : x
  2. Step 2: Convert to fraction form
    491,411.63/678,035.85 = 276,473.27/x
  3. Step 3: Cross multiply
    491,411.63x = 678,035.85 × 276,473.27
  4. Step 4: Simplify right side
    491,411.63x = 187,458,785,236.55
  5. Step 5: Solve for x
    x = 187,458,785,236.55/491,411.63
  6. Step 6: Final answer
    x = 381,469.99

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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.