Home / 810,399.57-1,118,418.75-447,894.21

Finding the Fourth Proportional to 810,399.57, 1,118,418.75 and 447,894.21

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Solution

The fourth proportional to 810,399.57, 1,118,418.75 and 447,894.21 is: 618,131.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,399.57 : 1,118,418.75 = 447,894.21 : x
  2. Step 2: Convert to fraction form
    810,399.57/1,118,418.75 = 447,894.21/x
  3. Step 3: Cross multiply
    810,399.57x = 1,118,418.75 × 447,894.21
  4. Step 4: Simplify right side
    810,399.57x = 500,933,282,480.44
  5. Step 5: Solve for x
    x = 500,933,282,480.44/810,399.57
  6. Step 6: Final answer
    x = 618,131.23

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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.