Home / 809,961.72-1,117,741.86-447,408.96

Finding the Fourth Proportional to 809,961.72, 1,117,741.86 and 447,408.96

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Solution

The fourth proportional to 809,961.72, 1,117,741.86 and 447,408.96 is: 617,421.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,961.72 : 1,117,741.86 = 447,408.96 : x
  2. Step 2: Convert to fraction form
    809,961.72/1,117,741.86 = 447,408.96/x
  3. Step 3: Cross multiply
    809,961.72x = 1,117,741.86 × 447,408.96
  4. Step 4: Simplify right side
    809,961.72x = 500,087,723,131.07
  5. Step 5: Solve for x
    x = 500,087,723,131.07/809,961.72
  6. Step 6: Final answer
    x = 617,421.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.