Home / 766,452.11-1,057,661.48-422,220.35

Finding the Fourth Proportional to 766,452.11, 1,057,661.48 and 422,220.35

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Solution

The fourth proportional to 766,452.11, 1,057,661.48 and 422,220.35 is: 582,640.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,452.11 : 1,057,661.48 = 422,220.35 : x
  2. Step 2: Convert to fraction form
    766,452.11/1,057,661.48 = 422,220.35/x
  3. Step 3: Cross multiply
    766,452.11x = 1,057,661.48 × 422,220.35
  4. Step 4: Simplify right side
    766,452.11x = 446,566,192,867.71
  5. Step 5: Solve for x
    x = 446,566,192,867.71/766,452.11
  6. Step 6: Final answer
    x = 582,640.70

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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.