Home / 782,396.46-1,079,732.79-442,857.42

Finding the Fourth Proportional to 782,396.46, 1,079,732.79 and 442,857.42

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Solution

The fourth proportional to 782,396.46, 1,079,732.79 and 442,857.42 is: 611,157.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,396.46 : 1,079,732.79 = 442,857.42 : x
  2. Step 2: Convert to fraction form
    782,396.46/1,079,732.79 = 442,857.42/x
  3. Step 3: Cross multiply
    782,396.46x = 1,079,732.79 × 442,857.42
  4. Step 4: Simplify right side
    782,396.46x = 478,167,677,668.80
  5. Step 5: Solve for x
    x = 478,167,677,668.80/782,396.46
  6. Step 6: Final answer
    x = 611,157.77

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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.