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Finding the Fourth Proportional to 618,857.77, 926,345.49 and 425,604.73

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Solution

The fourth proportional to 618,857.77, 926,345.49 and 425,604.73 is: 637,072.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,857.77 : 926,345.49 = 425,604.73 : x
  2. Step 2: Convert to fraction form
    618,857.77/926,345.49 = 425,604.73/x
  3. Step 3: Cross multiply
    618,857.77x = 926,345.49 × 425,604.73
  4. Step 4: Simplify right side
    618,857.77x = 394,257,022,158.17
  5. Step 5: Solve for x
    x = 394,257,022,158.17/618,857.77
  6. Step 6: Final answer
    x = 637,072.10

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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.