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Finding the Fourth Proportional to 494,153.60, 681,422.83 and 422,769.92

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Solution

The fourth proportional to 494,153.60, 681,422.83 and 422,769.92 is: 582,986.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,153.60 : 681,422.83 = 422,769.92 : x
  2. Step 2: Convert to fraction form
    494,153.60/681,422.83 = 422,769.92/x
  3. Step 3: Cross multiply
    494,153.60x = 681,422.83 × 422,769.92
  4. Step 4: Simplify right side
    494,153.60x = 288,085,070,861.24
  5. Step 5: Solve for x
    x = 288,085,070,861.24/494,153.60
  6. Step 6: Final answer
    x = 582,986.90

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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.