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Finding the Fourth Proportional to 719,443.54, 992,761.32 and 397,132.84

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Solution

The fourth proportional to 719,443.54, 992,761.32 and 397,132.84 is: 548,004.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,443.54 : 992,761.32 = 397,132.84 : x
  2. Step 2: Convert to fraction form
    719,443.54/992,761.32 = 397,132.84/x
  3. Step 3: Cross multiply
    719,443.54x = 992,761.32 × 397,132.84
  4. Step 4: Simplify right side
    719,443.54x = 394,258,122,453.75
  5. Step 5: Solve for x
    x = 394,258,122,453.75/719,443.54
  6. Step 6: Final answer
    x = 548,004.26

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1.5x scale

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.