Home / 489,964.26-676,087.96-285,968.40

Finding the Fourth Proportional to 489,964.26, 676,087.96 and 285,968.40

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Solution

The fourth proportional to 489,964.26, 676,087.96 and 285,968.40 is: 394,599.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,964.26 : 676,087.96 = 285,968.40 : x
  2. Step 2: Convert to fraction form
    489,964.26/676,087.96 = 285,968.40/x
  3. Step 3: Cross multiply
    489,964.26x = 676,087.96 × 285,968.40
  4. Step 4: Simplify right side
    489,964.26x = 193,339,792,180.46
  5. Step 5: Solve for x
    x = 193,339,792,180.46/489,964.26
  6. Step 6: Final answer
    x = 394,599.79

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1.5x scale

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.