Home / 499,819.92-689,034.09-356,330.85

Finding the Fourth Proportional to 499,819.92, 689,034.09 and 356,330.85

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Solution

The fourth proportional to 499,819.92, 689,034.09 and 356,330.85 is: 491,225.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,819.92 : 689,034.09 = 356,330.85 : x
  2. Step 2: Convert to fraction form
    499,819.92/689,034.09 = 356,330.85/x
  3. Step 3: Cross multiply
    499,819.92x = 689,034.09 × 356,330.85
  4. Step 4: Simplify right side
    499,819.92x = 245,524,102,968.68
  5. Step 5: Solve for x
    x = 245,524,102,968.68/499,819.92
  6. Step 6: Final answer
    x = 491,225.13

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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.