Home / 809,107.20-1,213,223.40-335,840.40

Finding the Fourth Proportional to 809,107.20, 1,213,223.40 and 335,840.40

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Solution

The fourth proportional to 809,107.20, 1,213,223.40 and 335,840.40 is: 503,579.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,107.20 : 1,213,223.40 = 335,840.40 : x
  2. Step 2: Convert to fraction form
    809,107.20/1,213,223.40 = 335,840.40/x
  3. Step 3: Cross multiply
    809,107.20x = 1,213,223.40 × 335,840.40
  4. Step 4: Simplify right side
    809,107.20x = 407,449,431,945.36
  5. Step 5: Solve for x
    x = 407,449,431,945.36/809,107.20
  6. Step 6: Final answer
    x = 503,579.05

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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.