Home / 2,131,349.79-3,198,285.59-784,458.39

Finding the Fourth Proportional to 2,131,349.79, 3,198,285.59 and 784,458.39

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Solution

The fourth proportional to 2,131,349.79, 3,198,285.59 and 784,458.39 is: 1,177,151.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131,349.79 : 3,198,285.59 = 784,458.39 : x
  2. Step 2: Convert to fraction form
    2,131,349.79/3,198,285.59 = 784,458.39/x
  3. Step 3: Cross multiply
    2,131,349.79x = 3,198,285.59 × 784,458.39
  4. Step 4: Simplify right side
    2,131,349.79x = 2,508,921,960,769.31
  5. Step 5: Solve for x
    x = 2,508,921,960,769.31/2,131,349.79
  6. Step 6: Final answer
    x = 1,177,151.67

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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.