Home / 811,829.31-1,120,296.88-449,268.45

Finding the Fourth Proportional to 811,829.31, 1,120,296.88 and 449,268.45

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Solution

The fourth proportional to 811,829.31, 1,120,296.88 and 449,268.45 is: 619,975.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,829.31 : 1,120,296.88 = 449,268.45 : x
  2. Step 2: Convert to fraction form
    811,829.31/1,120,296.88 = 449,268.45/x
  3. Step 3: Cross multiply
    811,829.31x = 1,120,296.88 × 449,268.45
  4. Step 4: Simplify right side
    811,829.31x = 503,314,042,817.44
  5. Step 5: Solve for x
    x = 503,314,042,817.44/811,829.31
  6. Step 6: Final answer
    x = 619,975.20

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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.