Home / 827,588.88-1,234,141.09-820,021.72

Finding the Fourth Proportional to 827,588.88, 1,234,141.09 and 820,021.72

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Solution

The fourth proportional to 827,588.88, 1,234,141.09 and 820,021.72 is: 1,222,856.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,588.88 : 1,234,141.09 = 820,021.72 : x
  2. Step 2: Convert to fraction form
    827,588.88/1,234,141.09 = 820,021.72/x
  3. Step 3: Cross multiply
    827,588.88x = 1,234,141.09 × 820,021.72
  4. Step 4: Simplify right side
    827,588.88x = 1,012,022,499,344.47
  5. Step 5: Solve for x
    x = 1,012,022,499,344.47/827,588.88
  6. Step 6: Final answer
    x = 1,222,856.57

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.