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Finding the Fourth Proportional to 656,879.55, 906,481.68 and 370,399.86

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Solution

The fourth proportional to 656,879.55, 906,481.68 and 370,399.86 is: 511,144.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,879.55 : 906,481.68 = 370,399.86 : x
  2. Step 2: Convert to fraction form
    656,879.55/906,481.68 = 370,399.86/x
  3. Step 3: Cross multiply
    656,879.55x = 906,481.68 × 370,399.86
  4. Step 4: Simplify right side
    656,879.55x = 335,760,687,364.57
  5. Step 5: Solve for x
    x = 335,760,687,364.57/656,879.55
  6. Step 6: Final answer
    x = 511,144.98

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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.