Home / 831,308.31-1,147,204.78-449,335.09

Finding the Fourth Proportional to 831,308.31, 1,147,204.78 and 449,335.09

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Solution

The fourth proportional to 831,308.31, 1,147,204.78 and 449,335.09 is: 620,082.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,308.31 : 1,147,204.78 = 449,335.09 : x
  2. Step 2: Convert to fraction form
    831,308.31/1,147,204.78 = 449,335.09/x
  3. Step 3: Cross multiply
    831,308.31x = 1,147,204.78 × 449,335.09
  4. Step 4: Simplify right side
    831,308.31x = 515,479,363,069.73
  5. Step 5: Solve for x
    x = 515,479,363,069.73/831,308.31
  6. Step 6: Final answer
    x = 620,082.05

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1.5x scale

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.