Home / 856,934.88-1,285,406.88-257,891.94

Finding the Fourth Proportional to 856,934.88, 1,285,406.88 and 257,891.94

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Solution

The fourth proportional to 856,934.88, 1,285,406.88 and 257,891.94 is: 386,839.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,934.88 : 1,285,406.88 = 257,891.94 : x
  2. Step 2: Convert to fraction form
    856,934.88/1,285,406.88 = 257,891.94/x
  3. Step 3: Cross multiply
    856,934.88x = 1,285,406.88 × 257,891.94
  4. Step 4: Simplify right side
    856,934.88x = 331,496,073,972.55
  5. Step 5: Solve for x
    x = 331,496,073,972.55/856,934.88
  6. Step 6: Final answer
    x = 386,839.28

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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.