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Finding the Fourth Proportional to 452,640.48, 678,956.40 and 275,196.48

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Solution

The fourth proportional to 452,640.48, 678,956.40 and 275,196.48 is: 412,792.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,640.48 : 678,956.40 = 275,196.48 : x
  2. Step 2: Convert to fraction form
    452,640.48/678,956.40 = 275,196.48/x
  3. Step 3: Cross multiply
    452,640.48x = 678,956.40 × 275,196.48
  4. Step 4: Simplify right side
    452,640.48x = 186,846,411,353.47
  5. Step 5: Solve for x
    x = 186,846,411,353.47/452,640.48
  6. Step 6: Final answer
    x = 412,792.09

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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.