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Finding the Fourth Proportional to 491,360.60, 678,077.33 and 276,500.86

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Solution

The fourth proportional to 491,360.60, 678,077.33 and 276,500.86 is: 381,571.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,360.60 : 678,077.33 = 276,500.86 : x
  2. Step 2: Convert to fraction form
    491,360.60/678,077.33 = 276,500.86/x
  3. Step 3: Cross multiply
    491,360.60x = 678,077.33 × 276,500.86
  4. Step 4: Simplify right side
    491,360.60x = 187,488,961,813.81
  5. Step 5: Solve for x
    x = 187,488,961,813.81/491,360.60
  6. Step 6: Final answer
    x = 381,571.02

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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.