Home / 856,703.13-1,285,118.42-257,616.33

Finding the Fourth Proportional to 856,703.13, 1,285,118.42 and 257,616.33

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Solution

The fourth proportional to 856,703.13, 1,285,118.42 and 257,616.33 is: 386,443.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,703.13 : 1,285,118.42 = 257,616.33 : x
  2. Step 2: Convert to fraction form
    856,703.13/1,285,118.42 = 257,616.33/x
  3. Step 3: Cross multiply
    856,703.13x = 1,285,118.42 × 257,616.33
  4. Step 4: Simplify right side
    856,703.13x = 331,067,489,687.72
  5. Step 5: Solve for x
    x = 331,067,489,687.72/856,703.13
  6. Step 6: Final answer
    x = 386,443.66

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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.