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Finding the Fourth Proportional to 578,484.20, 868,286.03 and 279,175.47

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Solution

The fourth proportional to 578,484.20, 868,286.03 and 279,175.47 is: 419,033.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,484.20 : 868,286.03 = 279,175.47 : x
  2. Step 2: Convert to fraction form
    578,484.20/868,286.03 = 279,175.47/x
  3. Step 3: Cross multiply
    578,484.20x = 868,286.03 × 279,175.47
  4. Step 4: Simplify right side
    578,484.20x = 242,404,159,123.81
  5. Step 5: Solve for x
    x = 242,404,159,123.81/578,484.20
  6. Step 6: Final answer
    x = 419,033.33

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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.