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Finding the Fourth Proportional to 557,879.28, 769,888.44 and 303,247.68

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Solution

The fourth proportional to 557,879.28, 769,888.44 and 303,247.68 is: 418,489.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,879.28 : 769,888.44 = 303,247.68 : x
  2. Step 2: Convert to fraction form
    557,879.28/769,888.44 = 303,247.68/x
  3. Step 3: Cross multiply
    557,879.28x = 769,888.44 × 303,247.68
  4. Step 4: Simplify right side
    557,879.28x = 233,466,883,288.82
  5. Step 5: Solve for x
    x = 233,466,883,288.82/557,879.28
  6. Step 6: Final answer
    x = 418,489.97

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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.