Home / 831,356.60-1,147,271.60-449,383.38

Finding the Fourth Proportional to 831,356.60, 1,147,271.60 and 449,383.38

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Solution

The fourth proportional to 831,356.60, 1,147,271.60 and 449,383.38 is: 620,148.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,356.60 : 1,147,271.60 = 449,383.38 : x
  2. Step 2: Convert to fraction form
    831,356.60/1,147,271.60 = 449,383.38/x
  3. Step 3: Cross multiply
    831,356.60x = 1,147,271.60 × 449,383.38
  4. Step 4: Simplify right side
    831,356.60x = 515,564,788,170.01
  5. Step 5: Solve for x
    x = 515,564,788,170.01/831,356.60
  6. Step 6: Final answer
    x = 620,148.79

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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.