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Finding the Fourth Proportional to 395,904.40, 593,856.60 and 329,419.60

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Solution

The fourth proportional to 395,904.40, 593,856.60 and 329,419.60 is: 494,129.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,904.40 : 593,856.60 = 329,419.60 : x
  2. Step 2: Convert to fraction form
    395,904.40/593,856.60 = 329,419.60/x
  3. Step 3: Cross multiply
    395,904.40x = 593,856.60 × 329,419.60
  4. Step 4: Simplify right side
    395,904.40x = 195,628,003,629.36
  5. Step 5: Solve for x
    x = 195,628,003,629.36/395,904.40
  6. Step 6: Final answer
    x = 494,129.40

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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.