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Finding the Fourth Proportional to 607,414.80, 911,122.20 and 489,316.80

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Solution

The fourth proportional to 607,414.80, 911,122.20 and 489,316.80 is: 733,975.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,414.80 : 911,122.20 = 489,316.80 : x
  2. Step 2: Convert to fraction form
    607,414.80/911,122.20 = 489,316.80/x
  3. Step 3: Cross multiply
    607,414.80x = 911,122.20 × 489,316.80
  4. Step 4: Simplify right side
    607,414.80x = 445,827,399,312.96
  5. Step 5: Solve for x
    x = 445,827,399,312.96/607,414.80
  6. Step 6: Final answer
    x = 733,975.20

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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.