Home / 1,088,121.40-1,632,182.10-378,221.20

Finding the Fourth Proportional to 1,088,121.40, 1,632,182.10 and 378,221.20

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Solution

The fourth proportional to 1,088,121.40, 1,632,182.10 and 378,221.20 is: 567,331.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088,121.40 : 1,632,182.10 = 378,221.20 : x
  2. Step 2: Convert to fraction form
    1,088,121.40/1,632,182.10 = 378,221.20/x
  3. Step 3: Cross multiply
    1,088,121.40x = 1,632,182.10 × 378,221.20
  4. Step 4: Simplify right side
    1,088,121.40x = 617,325,872,480.52
  5. Step 5: Solve for x
    x = 617,325,872,480.52/1,088,121.40
  6. Step 6: Final answer
    x = 567,331.80

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