Home / 811,869.23-1,120,351.88-449,308.37

Finding the Fourth Proportional to 811,869.23, 1,120,351.88 and 449,308.37

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Solution

The fourth proportional to 811,869.23, 1,120,351.88 and 449,308.37 is: 620,030.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,869.23 : 1,120,351.88 = 449,308.37 : x
  2. Step 2: Convert to fraction form
    811,869.23/1,120,351.88 = 449,308.37/x
  3. Step 3: Cross multiply
    811,869.23x = 1,120,351.88 × 449,308.37
  4. Step 4: Simplify right side
    811,869.23x = 503,383,469,180.93
  5. Step 5: Solve for x
    x = 503,383,469,180.93/811,869.23
  6. Step 6: Final answer
    x = 620,030.24

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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.