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Finding the Fourth Proportional to 452,576.92, 678,865.36 and 115,618.31

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Solution

The fourth proportional to 452,576.92, 678,865.36 and 115,618.31 is: 173,427.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,576.92 : 678,865.36 = 115,618.31 : x
  2. Step 2: Convert to fraction form
    452,576.92/678,865.36 = 115,618.31/x
  3. Step 3: Cross multiply
    452,576.92x = 678,865.36 × 115,618.31
  4. Step 4: Simplify right side
    452,576.92x = 78,489,261,957.37
  5. Step 5: Solve for x
    x = 78,489,261,957.37/452,576.92
  6. Step 6: Final answer
    x = 173,427.45

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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.