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Finding the Fourth Proportional to 479,021.27, 717,718.47 and 289,082.54

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Solution

The fourth proportional to 479,021.27, 717,718.47 and 289,082.54 is: 433,132.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,021.27 : 717,718.47 = 289,082.54 : x
  2. Step 2: Convert to fraction form
    479,021.27/717,718.47 = 289,082.54/x
  3. Step 3: Cross multiply
    479,021.27x = 717,718.47 × 289,082.54
  4. Step 4: Simplify right side
    479,021.27x = 207,479,874,723.92
  5. Step 5: Solve for x
    x = 207,479,874,723.92/479,021.27
  6. Step 6: Final answer
    x = 433,132.91

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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.