Home / 490,421.92-677,092.08-320,942.56

Finding the Fourth Proportional to 490,421.92, 677,092.08 and 320,942.56

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Solution

The fourth proportional to 490,421.92, 677,092.08 and 320,942.56 is: 443,103.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,421.92 : 677,092.08 = 320,942.56 : x
  2. Step 2: Convert to fraction form
    490,421.92/677,092.08 = 320,942.56/x
  3. Step 3: Cross multiply
    490,421.92x = 677,092.08 × 320,942.56
  4. Step 4: Simplify right side
    490,421.92x = 217,307,665,510.93
  5. Step 5: Solve for x
    x = 217,307,665,510.93/490,421.92
  6. Step 6: Final answer
    x = 443,103.49

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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.