Home / 831,876.42-1,147,989.46-449,903.20

Finding the Fourth Proportional to 831,876.42, 1,147,989.46 and 449,903.20

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Solution

The fourth proportional to 831,876.42, 1,147,989.46 and 449,903.20 is: 620,866.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,876.42 : 1,147,989.46 = 449,903.20 : x
  2. Step 2: Convert to fraction form
    831,876.42/1,147,989.46 = 449,903.20/x
  3. Step 3: Cross multiply
    831,876.42x = 1,147,989.46 × 449,903.20
  4. Step 4: Simplify right side
    831,876.42x = 516,484,126,500.78
  5. Step 5: Solve for x
    x = 516,484,126,500.78/831,876.42
  6. Step 6: Final answer
    x = 620,866.41

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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.