Home / 480,811.05-663,310.76-289,715.85

Finding the Fourth Proportional to 480,811.05, 663,310.76 and 289,715.85

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Solution

The fourth proportional to 480,811.05, 663,310.76 and 289,715.85 is: 399,682.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,811.05 : 663,310.76 = 289,715.85 : x
  2. Step 2: Convert to fraction form
    480,811.05/663,310.76 = 289,715.85/x
  3. Step 3: Cross multiply
    480,811.05x = 663,310.76 × 289,715.85
  4. Step 4: Simplify right side
    480,811.05x = 192,171,639,198.97
  5. Step 5: Solve for x
    x = 192,171,639,198.97/480,811.05
  6. Step 6: Final answer
    x = 399,682.24

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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.