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Finding the Fourth Proportional to 489,049.97, 674,656.55 and 325,782.36

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Solution

The fourth proportional to 489,049.97, 674,656.55 and 325,782.36 is: 449,424.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,049.97 : 674,656.55 = 325,782.36 : x
  2. Step 2: Convert to fraction form
    489,049.97/674,656.55 = 325,782.36/x
  3. Step 3: Cross multiply
    489,049.97x = 674,656.55 × 325,782.36
  4. Step 4: Simplify right side
    489,049.97x = 219,791,201,419.55
  5. Step 5: Solve for x
    x = 219,791,201,419.55/489,049.97
  6. Step 6: Final answer
    x = 449,424.84

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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.