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Finding the Fourth Proportional to 606,713.20, 910,069.80 and 394,136.80

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Solution

The fourth proportional to 606,713.20, 910,069.80 and 394,136.80 is: 591,205.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,713.20 : 910,069.80 = 394,136.80 : x
  2. Step 2: Convert to fraction form
    606,713.20/910,069.80 = 394,136.80/x
  3. Step 3: Cross multiply
    606,713.20x = 910,069.80 × 394,136.80
  4. Step 4: Simplify right side
    606,713.20x = 358,691,998,748.64
  5. Step 5: Solve for x
    x = 358,691,998,748.64/606,713.20
  6. Step 6: Final answer
    x = 591,205.20

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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.