Home / 945,704.40-1,418,556.60-280,856.40

Finding the Fourth Proportional to 945,704.40, 1,418,556.60 and 280,856.40

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Solution

The fourth proportional to 945,704.40, 1,418,556.60 and 280,856.40 is: 421,284.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,704.40 : 1,418,556.60 = 280,856.40 : x
  2. Step 2: Convert to fraction form
    945,704.40/1,418,556.60 = 280,856.40/x
  3. Step 3: Cross multiply
    945,704.40x = 1,418,556.60 × 280,856.40
  4. Step 4: Simplify right side
    945,704.40x = 398,410,699,872.24
  5. Step 5: Solve for x
    x = 398,410,699,872.24/945,704.40
  6. Step 6: Final answer
    x = 421,284.60

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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.