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Finding the Fourth Proportional to 607,891.30, 911,836.95 and 489,793.30

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Solution

The fourth proportional to 607,891.30, 911,836.95 and 489,793.30 is: 734,689.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,891.30 : 911,836.95 = 489,793.30 : x
  2. Step 2: Convert to fraction form
    607,891.30/911,836.95 = 489,793.30/x
  3. Step 3: Cross multiply
    607,891.30x = 911,836.95 × 489,793.30
  4. Step 4: Simplify right side
    607,891.30x = 446,611,628,802.44
  5. Step 5: Solve for x
    x = 446,611,628,802.44/607,891.30
  6. Step 6: Final answer
    x = 734,689.95

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.