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Finding the Fourth Proportional to 496,606.56, 685,332.60 and 281,755.68

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Solution

The fourth proportional to 496,606.56, 685,332.60 and 281,755.68 is: 388,831.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,606.56 : 685,332.60 = 281,755.68 : x
  2. Step 2: Convert to fraction form
    496,606.56/685,332.60 = 281,755.68/x
  3. Step 3: Cross multiply
    496,606.56x = 685,332.60 × 281,755.68
  4. Step 4: Simplify right side
    496,606.56x = 193,096,352,739.17
  5. Step 5: Solve for x
    x = 193,096,352,739.17/496,606.56
  6. Step 6: Final answer
    x = 388,831.66

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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.