Home / 856,069.43-1,284,159.49-287,427.56

Finding the Fourth Proportional to 856,069.43, 1,284,159.49 and 287,427.56

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Solution

The fourth proportional to 856,069.43, 1,284,159.49 and 287,427.56 is: 431,159.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,069.43 : 1,284,159.49 = 287,427.56 : x
  2. Step 2: Convert to fraction form
    856,069.43/1,284,159.49 = 287,427.56/x
  3. Step 3: Cross multiply
    856,069.43x = 1,284,159.49 × 287,427.56
  4. Step 4: Simplify right side
    856,069.43x = 369,102,821,722.18
  5. Step 5: Solve for x
    x = 369,102,821,722.18/856,069.43
  6. Step 6: Final answer
    x = 431,159.92

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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.