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Finding the Fourth Proportional to 719,435.54, 992,750.28 and 397,124.84

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Solution

The fourth proportional to 719,435.54, 992,750.28 and 397,124.84 is: 547,993.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,435.54 : 992,750.28 = 397,124.84 : x
  2. Step 2: Convert to fraction form
    719,435.54/992,750.28 = 397,124.84/x
  3. Step 3: Cross multiply
    719,435.54x = 992,750.28 × 397,124.84
  4. Step 4: Simplify right side
    719,435.54x = 394,245,796,104.96
  5. Step 5: Solve for x
    x = 394,245,796,104.96/719,435.54
  6. Step 6: Final answer
    x = 547,993.22

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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.