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Finding the Fourth Proportional to 398,890.98, 597,831.03 and 394,672.50

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Solution

The fourth proportional to 398,890.98, 597,831.03 and 394,672.50 is: 591,508.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,890.98 : 597,831.03 = 394,672.50 : x
  2. Step 2: Convert to fraction form
    398,890.98/597,831.03 = 394,672.50/x
  3. Step 3: Cross multiply
    398,890.98x = 597,831.03 × 394,672.50
  4. Step 4: Simplify right side
    398,890.98x = 235,947,467,187.68
  5. Step 5: Solve for x
    x = 235,947,467,187.68/398,890.98
  6. Step 6: Final answer
    x = 591,508.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.