Home / 811,183.17-1,215,805.17-378,317.55

Finding the Fourth Proportional to 811,183.17, 1,215,805.17 and 378,317.55

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Solution

The fourth proportional to 811,183.17, 1,215,805.17 and 378,317.55 is: 567,024.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,183.17 : 1,215,805.17 = 378,317.55 : x
  2. Step 2: Convert to fraction form
    811,183.17/1,215,805.17 = 378,317.55/x
  3. Step 3: Cross multiply
    811,183.17x = 1,215,805.17 × 378,317.55
  4. Step 4: Simplify right side
    811,183.17x = 459,960,433,191.73
  5. Step 5: Solve for x
    x = 459,960,433,191.73/811,183.17
  6. Step 6: Final answer
    x = 567,024.13

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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.