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Finding the Fourth Proportional to 809,166.80, 1,213,231.80 and 336,040.40

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Solution

The fourth proportional to 809,166.80, 1,213,231.80 and 336,040.40 is: 503,845.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,166.80 : 1,213,231.80 = 336,040.40 : x
  2. Step 2: Convert to fraction form
    809,166.80/1,213,231.80 = 336,040.40/x
  3. Step 3: Cross multiply
    809,166.80x = 1,213,231.80 × 336,040.40
  4. Step 4: Simplify right side
    809,166.80x = 407,694,899,364.72
  5. Step 5: Solve for x
    x = 407,694,899,364.72/809,166.80
  6. Step 6: Final answer
    x = 503,845.31

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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.