Home / 769,375.25-1,061,709.09-442,738.70

Finding the Fourth Proportional to 769,375.25, 1,061,709.09 and 442,738.70

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Solution

The fourth proportional to 769,375.25, 1,061,709.09 and 442,738.70 is: 610,962.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,375.25 : 1,061,709.09 = 442,738.70 : x
  2. Step 2: Convert to fraction form
    769,375.25/1,061,709.09 = 442,738.70/x
  3. Step 3: Cross multiply
    769,375.25x = 1,061,709.09 × 442,738.70
  4. Step 4: Simplify right side
    769,375.25x = 470,059,702,284.78
  5. Step 5: Solve for x
    x = 470,059,702,284.78/769,375.25
  6. Step 6: Final answer
    x = 610,962.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.