Home / 813,108.41-1,219,665.35-205,896.43

Finding the Fourth Proportional to 813,108.41, 1,219,665.35 and 205,896.43

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Solution

The fourth proportional to 813,108.41, 1,219,665.35 and 205,896.43 is: 308,845.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,108.41 : 1,219,665.35 = 205,896.43 : x
  2. Step 2: Convert to fraction form
    813,108.41/1,219,665.35 = 205,896.43/x
  3. Step 3: Cross multiply
    813,108.41x = 1,219,665.35 × 205,896.43
  4. Step 4: Simplify right side
    813,108.41x = 251,124,737,281.06
  5. Step 5: Solve for x
    x = 251,124,737,281.06/813,108.41
  6. Step 6: Final answer
    x = 308,845.33

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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.