Home / 664,489.30-996,831.76-215,060.80

Finding the Fourth Proportional to 664,489.30, 996,831.76 and 215,060.80

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Solution

The fourth proportional to 664,489.30, 996,831.76 and 215,060.80 is: 322,622.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,489.30 : 996,831.76 = 215,060.80 : x
  2. Step 2: Convert to fraction form
    664,489.30/996,831.76 = 215,060.80/x
  3. Step 3: Cross multiply
    664,489.30x = 996,831.76 × 215,060.80
  4. Step 4: Simplify right side
    664,489.30x = 214,379,435,771.01
  5. Step 5: Solve for x
    x = 214,379,435,771.01/664,489.30
  6. Step 6: Final answer
    x = 322,622.86

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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.