Home / 813,717.05-1,220,626.31-214,678.77

Finding the Fourth Proportional to 813,717.05, 1,220,626.31 and 214,678.77

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Solution

The fourth proportional to 813,717.05, 1,220,626.31 and 214,678.77 is: 322,031.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,717.05 : 1,220,626.31 = 214,678.77 : x
  2. Step 2: Convert to fraction form
    813,717.05/1,220,626.31 = 214,678.77/x
  3. Step 3: Cross multiply
    813,717.05x = 1,220,626.31 × 214,678.77
  4. Step 4: Simplify right side
    813,717.05x = 262,042,553,787.05
  5. Step 5: Solve for x
    x = 262,042,553,787.05/813,717.05
  6. Step 6: Final answer
    x = 322,031.54

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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.