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Finding the Fourth Proportional to 579,282.72, 867,792.88 and 275,244.20

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Solution

The fourth proportional to 579,282.72, 867,792.88 and 275,244.20 is: 412,328.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,282.72 : 867,792.88 = 275,244.20 : x
  2. Step 2: Convert to fraction form
    579,282.72/867,792.88 = 275,244.20/x
  3. Step 3: Cross multiply
    579,282.72x = 867,792.88 × 275,244.20
  4. Step 4: Simplify right side
    579,282.72x = 238,854,957,021.30
  5. Step 5: Solve for x
    x = 238,854,957,021.30/579,282.72
  6. Step 6: Final answer
    x = 412,328.81

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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.