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Finding the Fourth Proportional to 607,998.80, 911,998.20 and 308,363.60

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Solution

The fourth proportional to 607,998.80, 911,998.20 and 308,363.60 is: 462,545.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,998.80 : 911,998.20 = 308,363.60 : x
  2. Step 2: Convert to fraction form
    607,998.80/911,998.20 = 308,363.60/x
  3. Step 3: Cross multiply
    607,998.80x = 911,998.20 × 308,363.60
  4. Step 4: Simplify right side
    607,998.80x = 281,227,048,145.52
  5. Step 5: Solve for x
    x = 281,227,048,145.52/607,998.80
  6. Step 6: Final answer
    x = 462,545.40

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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.