Home / 872,221.73-1,203,680.19-479,770.20

Finding the Fourth Proportional to 872,221.73, 1,203,680.19 and 479,770.20

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Solution

The fourth proportional to 872,221.73, 1,203,680.19 and 479,770.20 is: 662,090.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,221.73 : 1,203,680.19 = 479,770.20 : x
  2. Step 2: Convert to fraction form
    872,221.73/1,203,680.19 = 479,770.20/x
  3. Step 3: Cross multiply
    872,221.73x = 1,203,680.19 × 479,770.20
  4. Step 4: Simplify right side
    872,221.73x = 577,489,879,473.94
  5. Step 5: Solve for x
    x = 577,489,879,473.94/872,221.73
  6. Step 6: Final answer
    x = 662,090.68

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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.