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Finding the Fourth Proportional to 978,840.21, 1,468,257.46 and 268,868.94

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Solution

The fourth proportional to 978,840.21, 1,468,257.46 and 268,868.94 is: 403,302.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,840.21 : 1,468,257.46 = 268,868.94 : x
  2. Step 2: Convert to fraction form
    978,840.21/1,468,257.46 = 268,868.94/x
  3. Step 3: Cross multiply
    978,840.21x = 1,468,257.46 × 268,868.94
  4. Step 4: Simplify right side
    978,840.21x = 394,768,826,917.29
  5. Step 5: Solve for x
    x = 394,768,826,917.29/978,840.21
  6. Step 6: Final answer
    x = 403,302.63

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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.