Home / 811,847.57-1,120,351.82-449,296.43

Finding the Fourth Proportional to 811,847.57, 1,120,351.82 and 449,296.43

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Solution

The fourth proportional to 811,847.57, 1,120,351.82 and 449,296.43 is: 620,030.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,847.57 : 1,120,351.82 = 449,296.43 : x
  2. Step 2: Convert to fraction form
    811,847.57/1,120,351.82 = 449,296.43/x
  3. Step 3: Cross multiply
    811,847.57x = 1,120,351.82 × 449,296.43
  4. Step 4: Simplify right side
    811,847.57x = 503,370,073,070.00
  5. Step 5: Solve for x
    x = 503,370,073,070.00/811,847.57
  6. Step 6: Final answer
    x = 620,030.28

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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.