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Finding the Fourth Proportional to 403,785.60, 605,022.30 and 336,863.40

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Solution

The fourth proportional to 403,785.60, 605,022.30 and 336,863.40 is: 504,747.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,785.60 : 605,022.30 = 336,863.40 : x
  2. Step 2: Convert to fraction form
    403,785.60/605,022.30 = 336,863.40/x
  3. Step 3: Cross multiply
    403,785.60x = 605,022.30 × 336,863.40
  4. Step 4: Simplify right side
    403,785.60x = 203,809,869,053.82
  5. Step 5: Solve for x
    x = 203,809,869,053.82/403,785.60
  6. Step 6: Final answer
    x = 504,747.74

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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.