Home / 811,127.86-1,216,694.43-305,553.13

Finding the Fourth Proportional to 811,127.86, 1,216,694.43 and 305,553.13

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Solution

The fourth proportional to 811,127.86, 1,216,694.43 and 305,553.13 is: 458,330.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,127.86 : 1,216,694.43 = 305,553.13 : x
  2. Step 2: Convert to fraction form
    811,127.86/1,216,694.43 = 305,553.13/x
  3. Step 3: Cross multiply
    811,127.86x = 1,216,694.43 × 305,553.13
  4. Step 4: Simplify right side
    811,127.86x = 371,764,788,298.33
  5. Step 5: Solve for x
    x = 371,764,788,298.33/811,127.86
  6. Step 6: Final answer
    x = 458,330.69

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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.