Home / 766,288.73-1,057,436.89-422,057.66

Finding the Fourth Proportional to 766,288.73, 1,057,436.89 and 422,057.66

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Solution

The fourth proportional to 766,288.73, 1,057,436.89 and 422,057.66 is: 582,416.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,288.73 : 1,057,436.89 = 422,057.66 : x
  2. Step 2: Convert to fraction form
    766,288.73/1,057,436.89 = 422,057.66/x
  3. Step 3: Cross multiply
    766,288.73x = 1,057,436.89 × 422,057.66
  4. Step 4: Simplify right side
    766,288.73x = 446,299,337,014.14
  5. Step 5: Solve for x
    x = 446,299,337,014.14/766,288.73
  6. Step 6: Final answer
    x = 582,416.68

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Double scale
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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.