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Finding the Fourth Proportional to 489,375.72, 674,623.62 and 345,882.60

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Solution

The fourth proportional to 489,375.72, 674,623.62 and 345,882.60 is: 476,812.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,375.72 : 674,623.62 = 345,882.60 : x
  2. Step 2: Convert to fraction form
    489,375.72/674,623.62 = 345,882.60/x
  3. Step 3: Cross multiply
    489,375.72x = 674,623.62 × 345,882.60
  4. Step 4: Simplify right side
    489,375.72x = 233,340,571,707.01
  5. Step 5: Solve for x
    x = 233,340,571,707.01/489,375.72
  6. Step 6: Final answer
    x = 476,812.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.