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Finding the Fourth Proportional to 876,010.10, 1,314,015.15 and 870,105.20

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Solution

The fourth proportional to 876,010.10, 1,314,015.15 and 870,105.20 is: 1,305,157.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,010.10 : 1,314,015.15 = 870,105.20 : x
  2. Step 2: Convert to fraction form
    876,010.10/1,314,015.15 = 870,105.20/x
  3. Step 3: Cross multiply
    876,010.10x = 1,314,015.15 × 870,105.20
  4. Step 4: Simplify right side
    876,010.10x = 1,143,331,414,893.78
  5. Step 5: Solve for x
    x = 1,143,331,414,893.78/876,010.10
  6. Step 6: Final answer
    x = 1,305,157.80

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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.