Home / 786,305.40-1,179,458.10-253,843.80

Finding the Fourth Proportional to 786,305.40, 1,179,458.10 and 253,843.80

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Solution

The fourth proportional to 786,305.40, 1,179,458.10 and 253,843.80 is: 380,765.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,305.40 : 1,179,458.10 = 253,843.80 : x
  2. Step 2: Convert to fraction form
    786,305.40/1,179,458.10 = 253,843.80/x
  3. Step 3: Cross multiply
    786,305.40x = 1,179,458.10 × 253,843.80
  4. Step 4: Simplify right side
    786,305.40x = 299,398,126,044.78
  5. Step 5: Solve for x
    x = 299,398,126,044.78/786,305.40
  6. Step 6: Final answer
    x = 380,765.70

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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.