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Finding the Fourth Proportional to 557,866.62, 769,864.68 and 303,218.46

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Solution

The fourth proportional to 557,866.62, 769,864.68 and 303,218.46 is: 418,446.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,866.62 : 769,864.68 = 303,218.46 : x
  2. Step 2: Convert to fraction form
    557,866.62/769,864.68 = 303,218.46/x
  3. Step 3: Cross multiply
    557,866.62x = 769,864.68 × 303,218.46
  4. Step 4: Simplify right side
    557,866.62x = 233,437,182,677.99
  5. Step 5: Solve for x
    x = 233,437,182,677.99/557,866.62
  6. Step 6: Final answer
    x = 418,446.23

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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.