Home / 716,121.42-988,227.83-393,831.48

Finding the Fourth Proportional to 716,121.42, 988,227.83 and 393,831.48

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Solution

The fourth proportional to 716,121.42, 988,227.83 and 393,831.48 is: 543,476.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,121.42 : 988,227.83 = 393,831.48 : x
  2. Step 2: Convert to fraction form
    716,121.42/988,227.83 = 393,831.48/x
  3. Step 3: Cross multiply
    716,121.42x = 988,227.83 × 393,831.48
  4. Step 4: Simplify right side
    716,121.42x = 389,195,228,866.09
  5. Step 5: Solve for x
    x = 389,195,228,866.09/716,121.42
  6. Step 6: Final answer
    x = 543,476.59

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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.