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Finding the Fourth Proportional to 538,773.60, 809,326.80 and 518,944.80

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Solution

The fourth proportional to 538,773.60, 809,326.80 and 518,944.80 is: 779,540.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,773.60 : 809,326.80 = 518,944.80 : x
  2. Step 2: Convert to fraction form
    538,773.60/809,326.80 = 518,944.80/x
  3. Step 3: Cross multiply
    538,773.60x = 809,326.80 × 518,944.80
  4. Step 4: Simplify right side
    538,773.60x = 419,995,934,360.64
  5. Step 5: Solve for x
    x = 419,995,934,360.64/538,773.60
  6. Step 6: Final answer
    x = 779,540.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.