Home / 811,704.35-1,217,556.53-338,729.15

Finding the Fourth Proportional to 811,704.35, 1,217,556.53 and 338,729.15

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Solution

The fourth proportional to 811,704.35, 1,217,556.53 and 338,729.15 is: 508,093.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,704.35 : 1,217,556.53 = 338,729.15 : x
  2. Step 2: Convert to fraction form
    811,704.35/1,217,556.53 = 338,729.15/x
  3. Step 3: Cross multiply
    811,704.35x = 1,217,556.53 × 338,729.15
  4. Step 4: Simplify right side
    811,704.35x = 412,421,886,790.20
  5. Step 5: Solve for x
    x = 412,421,886,790.20/811,704.35
  6. Step 6: Final answer
    x = 508,093.73

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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.