Home / 812,831.67-1,121,694.96-445,305.90

Finding the Fourth Proportional to 812,831.67, 1,121,694.96 and 445,305.90

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Solution

The fourth proportional to 812,831.67, 1,121,694.96 and 445,305.90 is: 614,515.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,831.67 : 1,121,694.96 = 445,305.90 : x
  2. Step 2: Convert to fraction form
    812,831.67/1,121,694.96 = 445,305.90/x
  3. Step 3: Cross multiply
    812,831.67x = 1,121,694.96 × 445,305.90
  4. Step 4: Simplify right side
    812,831.67x = 499,497,383,688.26
  5. Step 5: Solve for x
    x = 499,497,383,688.26/812,831.67
  6. Step 6: Final answer
    x = 614,515.16

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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.