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Finding the Fourth Proportional to 489,110.80, 674,979.80 and 295,491.60

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Solution

The fourth proportional to 489,110.80, 674,979.80 and 295,491.60 is: 407,782.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,110.80 : 674,979.80 = 295,491.60 : x
  2. Step 2: Convert to fraction form
    489,110.80/674,979.80 = 295,491.60/x
  3. Step 3: Cross multiply
    489,110.80x = 674,979.80 × 295,491.60
  4. Step 4: Simplify right side
    489,110.80x = 199,450,861,069.68
  5. Step 5: Solve for x
    x = 199,450,861,069.68/489,110.80
  6. Step 6: Final answer
    x = 407,782.57

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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.