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Finding the Fourth Proportional to 869,104.40, 1,303,753.80 and 270,060.80

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Solution

The fourth proportional to 869,104.40, 1,303,753.80 and 270,060.80 is: 405,121.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,104.40 : 1,303,753.80 = 270,060.80 : x
  2. Step 2: Convert to fraction form
    869,104.40/1,303,753.80 = 270,060.80/x
  3. Step 3: Cross multiply
    869,104.40x = 1,303,753.80 × 270,060.80
  4. Step 4: Simplify right side
    869,104.40x = 352,092,794,231.04
  5. Step 5: Solve for x
    x = 352,092,794,231.04/869,104.40
  6. Step 6: Final answer
    x = 405,121.40

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Half scale
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Double scale
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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.