Home / 521,723.20-782,584.80-206,017.60

Finding the Fourth Proportional to 521,723.20, 782,584.80 and 206,017.60

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Solution

The fourth proportional to 521,723.20, 782,584.80 and 206,017.60 is: 309,026.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,723.20 : 782,584.80 = 206,017.60 : x
  2. Step 2: Convert to fraction form
    521,723.20/782,584.80 = 206,017.60/x
  3. Step 3: Cross multiply
    521,723.20x = 782,584.80 × 206,017.60
  4. Step 4: Simplify right side
    521,723.20x = 161,226,242,292.48
  5. Step 5: Solve for x
    x = 161,226,242,292.48/521,723.20
  6. Step 6: Final answer
    x = 309,026.40

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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.