Home / 831,761.64-1,147,831.13-449,788.42

Finding the Fourth Proportional to 831,761.64, 1,147,831.13 and 449,788.42

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Solution

The fourth proportional to 831,761.64, 1,147,831.13 and 449,788.42 is: 620,708.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,761.64 : 1,147,831.13 = 449,788.42 : x
  2. Step 2: Convert to fraction form
    831,761.64/1,147,831.13 = 449,788.42/x
  3. Step 3: Cross multiply
    831,761.64x = 1,147,831.13 × 449,788.42
  4. Step 4: Simplify right side
    831,761.64x = 516,281,148,455.47
  5. Step 5: Solve for x
    x = 516,281,148,455.47/831,761.64
  6. Step 6: Final answer
    x = 620,708.06

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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.