Home / 869,136.80-1,303,705.20-270,093.20

Finding the Fourth Proportional to 869,136.80, 1,303,705.20 and 270,093.20

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Solution

The fourth proportional to 869,136.80, 1,303,705.20 and 270,093.20 is: 405,139.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,136.80 : 1,303,705.20 = 270,093.20 : x
  2. Step 2: Convert to fraction form
    869,136.80/1,303,705.20 = 270,093.20/x
  3. Step 3: Cross multiply
    869,136.80x = 1,303,705.20 × 270,093.20
  4. Step 4: Simplify right side
    869,136.80x = 352,121,909,324.64
  5. Step 5: Solve for x
    x = 352,121,909,324.64/869,136.80
  6. Step 6: Final answer
    x = 405,139.80

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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.