Home / 521,749.20-782,623.80-255,372.60

Finding the Fourth Proportional to 521,749.20, 782,623.80 and 255,372.60

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Solution

The fourth proportional to 521,749.20, 782,623.80 and 255,372.60 is: 383,058.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,749.20 : 782,623.80 = 255,372.60 : x
  2. Step 2: Convert to fraction form
    521,749.20/782,623.80 = 255,372.60/x
  3. Step 3: Cross multiply
    521,749.20x = 782,623.80 × 255,372.60
  4. Step 4: Simplify right side
    521,749.20x = 199,860,674,627.88
  5. Step 5: Solve for x
    x = 199,860,674,627.88/521,749.20
  6. Step 6: Final answer
    x = 383,058.90

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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.