Home / 549,257.20-823,885.80-313,327.60

Finding the Fourth Proportional to 549,257.20, 823,885.80 and 313,327.60

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Solution

The fourth proportional to 549,257.20, 823,885.80 and 313,327.60 is: 469,991.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,257.20 : 823,885.80 = 313,327.60 : x
  2. Step 2: Convert to fraction form
    549,257.20/823,885.80 = 313,327.60/x
  3. Step 3: Cross multiply
    549,257.20x = 823,885.80 × 313,327.60
  4. Step 4: Simplify right side
    549,257.20x = 258,146,160,388.08
  5. Step 5: Solve for x
    x = 258,146,160,388.08/549,257.20
  6. Step 6: Final answer
    x = 469,991.40

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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.