Home / 831,661.78-1,147,694.07-449,688.46

Finding the Fourth Proportional to 831,661.78, 1,147,694.07 and 449,688.46

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Solution

The fourth proportional to 831,661.78, 1,147,694.07 and 449,688.46 is: 620,570.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,661.78 : 1,147,694.07 = 449,688.46 : x
  2. Step 2: Convert to fraction form
    831,661.78/1,147,694.07 = 449,688.46/x
  3. Step 3: Cross multiply
    831,661.78x = 1,147,694.07 × 449,688.46
  4. Step 4: Simplify right side
    831,661.78x = 516,104,778,889.43
  5. Step 5: Solve for x
    x = 516,104,778,889.43/831,661.78
  6. Step 6: Final answer
    x = 620,570.51

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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.