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Finding the Fourth Proportional to 402,579.60, 605,035.80 and 395,581.20

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Solution

The fourth proportional to 402,579.60, 605,035.80 and 395,581.20 is: 594,517.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,579.60 : 605,035.80 = 395,581.20 : x
  2. Step 2: Convert to fraction form
    402,579.60/605,035.80 = 395,581.20/x
  3. Step 3: Cross multiply
    402,579.60x = 605,035.80 × 395,581.20
  4. Step 4: Simplify right side
    402,579.60x = 239,340,787,806.96
  5. Step 5: Solve for x
    x = 239,340,787,806.96/402,579.60
  6. Step 6: Final answer
    x = 594,517.92

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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.