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Finding the Fourth Proportional to 719,475.37, 992,863.41 and 397,177.18

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Solution

The fourth proportional to 719,475.37, 992,863.41 and 397,177.18 is: 548,097.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,475.37 : 992,863.41 = 397,177.18 : x
  2. Step 2: Convert to fraction form
    719,475.37/992,863.41 = 397,177.18/x
  3. Step 3: Cross multiply
    719,475.37x = 992,863.41 × 397,177.18
  4. Step 4: Simplify right side
    719,475.37x = 394,342,689,308.98
  5. Step 5: Solve for x
    x = 394,342,689,308.98/719,475.37
  6. Step 6: Final answer
    x = 548,097.55

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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.