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Finding the Fourth Proportional to 489,580.68, 675,619.48 and 274,720.24

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Solution

The fourth proportional to 489,580.68, 675,619.48 and 274,720.24 is: 379,112.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,580.68 : 675,619.48 = 274,720.24 : x
  2. Step 2: Convert to fraction form
    489,580.68/675,619.48 = 274,720.24/x
  3. Step 3: Cross multiply
    489,580.68x = 675,619.48 × 274,720.24
  4. Step 4: Simplify right side
    489,580.68x = 185,606,345,694.28
  5. Step 5: Solve for x
    x = 185,606,345,694.28/489,580.68
  6. Step 6: Final answer
    x = 379,112.89

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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.