Home / 766,406.37-1,057,724.01-422,277.66

Finding the Fourth Proportional to 766,406.37, 1,057,724.01 and 422,277.66

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Solution

The fourth proportional to 766,406.37, 1,057,724.01 and 422,277.66 is: 582,789.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,406.37 : 1,057,724.01 = 422,277.66 : x
  2. Step 2: Convert to fraction form
    766,406.37/1,057,724.01 = 422,277.66/x
  3. Step 3: Cross multiply
    766,406.37x = 1,057,724.01 × 422,277.66
  4. Step 4: Simplify right side
    766,406.37x = 446,653,219,868.62
  5. Step 5: Solve for x
    x = 446,653,219,868.62/766,406.37
  6. Step 6: Final answer
    x = 582,789.02

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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.