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Finding the Fourth Proportional to 489,858.62, 675,967.56 and 274,957.16

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Solution

The fourth proportional to 489,858.62, 675,967.56 and 274,957.16 is: 379,419.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,858.62 : 675,967.56 = 274,957.16 : x
  2. Step 2: Convert to fraction form
    489,858.62/675,967.56 = 274,957.16/x
  3. Step 3: Cross multiply
    489,858.62x = 675,967.56 × 274,957.16
  4. Step 4: Simplify right side
    489,858.62x = 185,862,117,169.89
  5. Step 5: Solve for x
    x = 185,862,117,169.89/489,858.62
  6. Step 6: Final answer
    x = 379,419.92

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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.