Home / 809,321.60-1,213,982.40-336,346.40

Finding the Fourth Proportional to 809,321.60, 1,213,982.40 and 336,346.40

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Solution

The fourth proportional to 809,321.60, 1,213,982.40 and 336,346.40 is: 504,519.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,321.60 : 1,213,982.40 = 336,346.40 : x
  2. Step 2: Convert to fraction form
    809,321.60/1,213,982.40 = 336,346.40/x
  3. Step 3: Cross multiply
    809,321.60x = 1,213,982.40 × 336,346.40
  4. Step 4: Simplify right side
    809,321.60x = 408,318,609,903.36
  5. Step 5: Solve for x
    x = 408,318,609,903.36/809,321.60
  6. Step 6: Final answer
    x = 504,519.60

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Double scale
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Similar ratio
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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.