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Finding the Fourth Proportional to 658,764.48, 987,446.72 and 259,350.24

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Solution

The fourth proportional to 658,764.48, 987,446.72 and 259,350.24 is: 388,749.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,764.48 : 987,446.72 = 259,350.24 : x
  2. Step 2: Convert to fraction form
    658,764.48/987,446.72 = 259,350.24/x
  3. Step 3: Cross multiply
    658,764.48x = 987,446.72 × 259,350.24
  4. Step 4: Simplify right side
    658,764.48x = 256,094,543,819.21
  5. Step 5: Solve for x
    x = 256,094,543,819.21/658,764.48
  6. Step 6: Final answer
    x = 388,749.78

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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.