Home / 890,742.80-1,336,114.20-259,720.40

Finding the Fourth Proportional to 890,742.80, 1,336,114.20 and 259,720.40

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Solution

The fourth proportional to 890,742.80, 1,336,114.20 and 259,720.40 is: 389,580.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,742.80 : 1,336,114.20 = 259,720.40 : x
  2. Step 2: Convert to fraction form
    890,742.80/1,336,114.20 = 259,720.40/x
  3. Step 3: Cross multiply
    890,742.80x = 1,336,114.20 × 259,720.40
  4. Step 4: Simplify right side
    890,742.80x = 347,016,114,469.68
  5. Step 5: Solve for x
    x = 347,016,114,469.68/890,742.80
  6. Step 6: Final answer
    x = 389,580.60

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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.