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Finding the Fourth Proportional to 719,497.75, 992,880.79 and 397,200.93

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Solution

The fourth proportional to 719,497.75, 992,880.79 and 397,200.93 is: 548,122.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,497.75 : 992,880.79 = 397,200.93 : x
  2. Step 2: Convert to fraction form
    719,497.75/992,880.79 = 397,200.93/x
  3. Step 3: Cross multiply
    719,497.75x = 992,880.79 × 397,200.93
  4. Step 4: Simplify right side
    719,497.75x = 394,373,172,174.13
  5. Step 5: Solve for x
    x = 394,373,172,174.13/719,497.75
  6. Step 6: Final answer
    x = 548,122.87

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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.