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Finding the Fourth Proportional to 529,668.28, 730,933.42 and 287,956.92

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Solution

The fourth proportional to 529,668.28, 730,933.42 and 287,956.92 is: 397,375.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,668.28 : 730,933.42 = 287,956.92 : x
  2. Step 2: Convert to fraction form
    529,668.28/730,933.42 = 287,956.92/x
  3. Step 3: Cross multiply
    529,668.28x = 730,933.42 × 287,956.92
  4. Step 4: Simplify right side
    529,668.28x = 210,477,336,348.27
  5. Step 5: Solve for x
    x = 210,477,336,348.27/529,668.28
  6. Step 6: Final answer
    x = 397,375.76

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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.