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Finding the Fourth Proportional to 618,392.05, 927,563.81 and 258,469.94

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Solution

The fourth proportional to 618,392.05, 927,563.81 and 258,469.94 is: 387,694.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,392.05 : 927,563.81 = 258,469.94 : x
  2. Step 2: Convert to fraction form
    618,392.05/927,563.81 = 258,469.94/x
  3. Step 3: Cross multiply
    618,392.05x = 927,563.81 × 258,469.94
  4. Step 4: Simplify right side
    618,392.05x = 239,747,363,343.43
  5. Step 5: Solve for x
    x = 239,747,363,343.43/618,392.05
  6. Step 6: Final answer
    x = 387,694.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.