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Finding the Fourth Proportional to 719,464.69, 992,869.32 and 397,174.96

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Solution

The fourth proportional to 719,464.69, 992,869.32 and 397,174.96 is: 548,105.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,464.69 : 992,869.32 = 397,174.96 : x
  2. Step 2: Convert to fraction form
    719,464.69/992,869.32 = 397,174.96/x
  3. Step 3: Cross multiply
    719,464.69x = 992,869.32 × 397,174.96
  4. Step 4: Simplify right side
    719,464.69x = 394,342,832,456.23
  5. Step 5: Solve for x
    x = 394,342,832,456.23/719,464.69
  6. Step 6: Final answer
    x = 548,105.89

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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.