Home / 809,982.72-1,117,769.13-447,431.90

Finding the Fourth Proportional to 809,982.72, 1,117,769.13 and 447,431.90

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Solution

The fourth proportional to 809,982.72, 1,117,769.13 and 447,431.90 is: 617,452.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,982.72 : 1,117,769.13 = 447,431.90 : x
  2. Step 2: Convert to fraction form
    809,982.72/1,117,769.13 = 447,431.90/x
  3. Step 3: Cross multiply
    809,982.72x = 1,117,769.13 × 447,431.90
  4. Step 4: Simplify right side
    809,982.72x = 500,125,560,008.40
  5. Step 5: Solve for x
    x = 500,125,560,008.40/809,982.72
  6. Step 6: Final answer
    x = 617,452.14

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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.