Home / 1,238,660.82-1,857,545.73-428,825.34

Finding the Fourth Proportional to 1,238,660.82, 1,857,545.73 and 428,825.34

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Solution

The fourth proportional to 1,238,660.82, 1,857,545.73 and 428,825.34 is: 643,083.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,660.82 : 1,857,545.73 = 428,825.34 : x
  2. Step 2: Convert to fraction form
    1,238,660.82/1,857,545.73 = 428,825.34/x
  3. Step 3: Cross multiply
    1,238,660.82x = 1,857,545.73 × 428,825.34
  4. Step 4: Simplify right side
    1,238,660.82x = 796,562,679,232.80
  5. Step 5: Solve for x
    x = 796,562,679,232.80/1,238,660.82
  6. Step 6: Final answer
    x = 643,083.78

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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.