Home / 809,115.40-1,213,964.70-336,140.20

Finding the Fourth Proportional to 809,115.40, 1,213,964.70 and 336,140.20

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Solution

The fourth proportional to 809,115.40, 1,213,964.70 and 336,140.20 is: 504,331.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,115.40 : 1,213,964.70 = 336,140.20 : x
  2. Step 2: Convert to fraction form
    809,115.40/1,213,964.70 = 336,140.20/x
  3. Step 3: Cross multiply
    809,115.40x = 1,213,964.70 × 336,140.20
  4. Step 4: Simplify right side
    809,115.40x = 408,062,337,050.94
  5. Step 5: Solve for x
    x = 408,062,337,050.94/809,115.40
  6. Step 6: Final answer
    x = 504,331.44

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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.