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Finding the Fourth Proportional to 557,689.43, 769,616.25 and 303,040.62

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Solution

The fourth proportional to 557,689.43, 769,616.25 and 303,040.62 is: 418,198.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,689.43 : 769,616.25 = 303,040.62 : x
  2. Step 2: Convert to fraction form
    557,689.43/769,616.25 = 303,040.62/x
  3. Step 3: Cross multiply
    557,689.43x = 769,616.25 × 303,040.62
  4. Step 4: Simplify right side
    557,689.43x = 233,224,985,562.08
  5. Step 5: Solve for x
    x = 233,224,985,562.08/557,689.43
  6. Step 6: Final answer
    x = 418,198.68

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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.