Home / 811,272.16-1,216,910.31-331,499.97

Finding the Fourth Proportional to 811,272.16, 1,216,910.31 and 331,499.97

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Solution

The fourth proportional to 811,272.16, 1,216,910.31 and 331,499.97 is: 497,250.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,272.16 : 1,216,910.31 = 331,499.97 : x
  2. Step 2: Convert to fraction form
    811,272.16/1,216,910.31 = 331,499.97/x
  3. Step 3: Cross multiply
    811,272.16x = 1,216,910.31 × 331,499.97
  4. Step 4: Simplify right side
    811,272.16x = 403,405,731,257.69
  5. Step 5: Solve for x
    x = 403,405,731,257.69/811,272.16
  6. Step 6: Final answer
    x = 497,250.80

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Double scale
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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.