Home / 728,164.38-1,004,212.44-456,261.42

Finding the Fourth Proportional to 728,164.38, 1,004,212.44 and 456,261.42

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Solution

The fourth proportional to 728,164.38, 1,004,212.44 and 456,261.42 is: 629,230.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,164.38 : 1,004,212.44 = 456,261.42 : x
  2. Step 2: Convert to fraction form
    728,164.38/1,004,212.44 = 456,261.42/x
  3. Step 3: Cross multiply
    728,164.38x = 1,004,212.44 × 456,261.42
  4. Step 4: Simplify right side
    728,164.38x = 458,183,393,856.07
  5. Step 5: Solve for x
    x = 458,183,393,856.07/728,164.38
  6. Step 6: Final answer
    x = 629,230.72

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.