Home / 811,969.80-1,120,495.14-449,408.52

Finding the Fourth Proportional to 811,969.80, 1,120,495.14 and 449,408.52

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Solution

The fourth proportional to 811,969.80, 1,120,495.14 and 449,408.52 is: 620,170.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,969.80 : 1,120,495.14 = 449,408.52 : x
  2. Step 2: Convert to fraction form
    811,969.80/1,120,495.14 = 449,408.52/x
  3. Step 3: Cross multiply
    811,969.80x = 1,120,495.14 × 449,408.52
  4. Step 4: Simplify right side
    811,969.80x = 503,560,062,534.59
  5. Step 5: Solve for x
    x = 503,560,062,534.59/811,969.80
  6. Step 6: Final answer
    x = 620,170.93

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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.