Home / 812,718.54-1,219,192.11-339,296.22

Finding the Fourth Proportional to 812,718.54, 1,219,192.11 and 339,296.22

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Solution

The fourth proportional to 812,718.54, 1,219,192.11 and 339,296.22 is: 508,992.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,718.54 : 1,219,192.11 = 339,296.22 : x
  2. Step 2: Convert to fraction form
    812,718.54/1,219,192.11 = 339,296.22/x
  3. Step 3: Cross multiply
    812,718.54x = 1,219,192.11 × 339,296.22
  4. Step 4: Simplify right side
    812,718.54x = 413,667,274,376.82
  5. Step 5: Solve for x
    x = 413,667,274,376.82/812,718.54
  6. Step 6: Final answer
    x = 508,992.05

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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.