Home / 809,157.80-1,213,421.11-303,443.21

Finding the Fourth Proportional to 809,157.80, 1,213,421.11 and 303,443.21

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Solution

The fourth proportional to 809,157.80, 1,213,421.11 and 303,443.21 is: 455,046.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,157.80 : 1,213,421.11 = 303,443.21 : x
  2. Step 2: Convert to fraction form
    809,157.80/1,213,421.11 = 303,443.21/x
  3. Step 3: Cross multiply
    809,157.80x = 1,213,421.11 × 303,443.21
  4. Step 4: Simplify right side
    809,157.80x = 368,204,398,975.11
  5. Step 5: Solve for x
    x = 368,204,398,975.11/809,157.80
  6. Step 6: Final answer
    x = 455,046.47

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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.