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Finding the Fourth Proportional to 719,516.28, 992,933.73 and 397,226.90

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Solution

The fourth proportional to 719,516.28, 992,933.73 and 397,226.90 is: 548,173.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,516.28 : 992,933.73 = 397,226.90 : x
  2. Step 2: Convert to fraction form
    719,516.28/992,933.73 = 397,226.90/x
  3. Step 3: Cross multiply
    719,516.28x = 992,933.73 × 397,226.90
  4. Step 4: Simplify right side
    719,516.28x = 394,419,987,473.34
  5. Step 5: Solve for x
    x = 394,419,987,473.34/719,516.28
  6. Step 6: Final answer
    x = 548,173.82

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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.