Home / 831,358.73-1,147,274.55-449,385.53

Finding the Fourth Proportional to 831,358.73, 1,147,274.55 and 449,385.53

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Solution

The fourth proportional to 831,358.73, 1,147,274.55 and 449,385.53 is: 620,151.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,358.73 : 1,147,274.55 = 449,385.53 : x
  2. Step 2: Convert to fraction form
    831,358.73/1,147,274.55 = 449,385.53/x
  3. Step 3: Cross multiply
    831,358.73x = 1,147,274.55 × 449,385.53
  4. Step 4: Simplify right side
    831,358.73x = 515,568,575,970.89
  5. Step 5: Solve for x
    x = 515,568,575,970.89/831,358.73
  6. Step 6: Final answer
    x = 620,151.75

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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.