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Finding the Fourth Proportional to 403,789.60, 605,028.30 and 336,867.40

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Solution

The fourth proportional to 403,789.60, 605,028.30 and 336,867.40 is: 504,753.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,789.60 : 605,028.30 = 336,867.40 : x
  2. Step 2: Convert to fraction form
    403,789.60/605,028.30 = 336,867.40/x
  3. Step 3: Cross multiply
    403,789.60x = 605,028.30 × 336,867.40
  4. Step 4: Simplify right side
    403,789.60x = 203,814,310,347.42
  5. Step 5: Solve for x
    x = 203,814,310,347.42/403,789.60
  6. Step 6: Final answer
    x = 504,753.74

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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.