Home / 919,609.76-1,379,415.18-254,761.76

Finding the Fourth Proportional to 919,609.76, 1,379,415.18 and 254,761.76

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Solution

The fourth proportional to 919,609.76, 1,379,415.18 and 254,761.76 is: 382,142.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,609.76 : 1,379,415.18 = 254,761.76 : x
  2. Step 2: Convert to fraction form
    919,609.76/1,379,415.18 = 254,761.76/x
  3. Step 3: Cross multiply
    919,609.76x = 1,379,415.18 × 254,761.76
  4. Step 4: Simplify right side
    919,609.76x = 351,422,239,027.52
  5. Step 5: Solve for x
    x = 351,422,239,027.52/919,609.76
  6. Step 6: Final answer
    x = 382,142.79

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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.