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Finding the Fourth Proportional to 503,336.91, 694,634.84 and 288,490.86

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Solution

The fourth proportional to 503,336.91, 694,634.84 and 288,490.86 is: 398,134.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,336.91 : 694,634.84 = 288,490.86 : x
  2. Step 2: Convert to fraction form
    503,336.91/694,634.84 = 288,490.86/x
  3. Step 3: Cross multiply
    503,336.91x = 694,634.84 × 288,490.86
  4. Step 4: Simplify right side
    503,336.91x = 200,395,802,377.56
  5. Step 5: Solve for x
    x = 200,395,802,377.56/503,336.91
  6. Step 6: Final answer
    x = 398,134.53

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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.