Home / 809,579.20-1,215,103.20-410,497.60

Finding the Fourth Proportional to 809,579.20, 1,215,103.20 and 410,497.60

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Solution

The fourth proportional to 809,579.20, 1,215,103.20 and 410,497.60 is: 616,118.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,579.20 : 1,215,103.20 = 410,497.60 : x
  2. Step 2: Convert to fraction form
    809,579.20/1,215,103.20 = 410,497.60/x
  3. Step 3: Cross multiply
    809,579.20x = 1,215,103.20 × 410,497.60
  4. Step 4: Simplify right side
    809,579.20x = 498,796,947,352.32
  5. Step 5: Solve for x
    x = 498,796,947,352.32/809,579.20
  6. Step 6: Final answer
    x = 616,118.78

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1.5x scale

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.