Home / 547,789.40-821,684.10-193,203.80

Finding the Fourth Proportional to 547,789.40, 821,684.10 and 193,203.80

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Solution

The fourth proportional to 547,789.40, 821,684.10 and 193,203.80 is: 289,805.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,789.40 : 821,684.10 = 193,203.80 : x
  2. Step 2: Convert to fraction form
    547,789.40/821,684.10 = 193,203.80/x
  3. Step 3: Cross multiply
    547,789.40x = 821,684.10 × 193,203.80
  4. Step 4: Simplify right side
    547,789.40x = 158,752,490,519.58
  5. Step 5: Solve for x
    x = 158,752,490,519.58/547,789.40
  6. Step 6: Final answer
    x = 289,805.70

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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.