Home / 831,828-1,147,926.10-449,854.78

Finding the Fourth Proportional to 831,828, 1,147,926.10 and 449,854.78

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Solution

The fourth proportional to 831,828, 1,147,926.10 and 449,854.78 is: 620,801.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,828 : 1,147,926.10 = 449,854.78 : x
  2. Step 2: Convert to fraction form
    831,828/1,147,926.10 = 449,854.78/x
  3. Step 3: Cross multiply
    831,828x = 1,147,926.10 × 449,854.78
  4. Step 4: Simplify right side
    831,828x = 516,400,043,171.76
  5. Step 5: Solve for x
    x = 516,400,043,171.76/831,828
  6. Step 6: Final answer
    x = 620,801.47

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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.