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Finding the Fourth Proportional to 719,496.39, 992,879.01 and 397,199.58

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Solution

The fourth proportional to 719,496.39, 992,879.01 and 397,199.58 is: 548,121.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,496.39 : 992,879.01 = 397,199.58 : x
  2. Step 2: Convert to fraction form
    719,496.39/992,879.01 = 397,199.58/x
  3. Step 3: Cross multiply
    719,496.39x = 992,879.01 × 397,199.58
  4. Step 4: Simplify right side
    719,496.39x = 394,371,125,762.82
  5. Step 5: Solve for x
    x = 394,371,125,762.82/719,496.39
  6. Step 6: Final answer
    x = 548,121.06

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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.