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Finding the Fourth Proportional to 505,785.30, 759,103.61 and 252,989.97

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Solution

The fourth proportional to 505,785.30, 759,103.61 and 252,989.97 is: 379,697.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,785.30 : 759,103.61 = 252,989.97 : x
  2. Step 2: Convert to fraction form
    505,785.30/759,103.61 = 252,989.97/x
  3. Step 3: Cross multiply
    505,785.30x = 759,103.61 × 252,989.97
  4. Step 4: Simplify right side
    505,785.30x = 192,045,598,255.84
  5. Step 5: Solve for x
    x = 192,045,598,255.84/505,785.30
  6. Step 6: Final answer
    x = 379,697.86

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1.5x scale

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.