Home / 870,311.70-1,305,467.55-551,447.10

Finding the Fourth Proportional to 870,311.70, 1,305,467.55 and 551,447.10

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Solution

The fourth proportional to 870,311.70, 1,305,467.55 and 551,447.10 is: 827,170.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,311.70 : 1,305,467.55 = 551,447.10 : x
  2. Step 2: Convert to fraction form
    870,311.70/1,305,467.55 = 551,447.10/x
  3. Step 3: Cross multiply
    870,311.70x = 1,305,467.55 × 551,447.10
  4. Step 4: Simplify right side
    870,311.70x = 719,896,294,591.61
  5. Step 5: Solve for x
    x = 719,896,294,591.61/870,311.70
  6. Step 6: Final answer
    x = 827,170.65

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Double scale
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Similar ratio
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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.