Home / 812,869.82-1,220,061.27-413,809.35

Finding the Fourth Proportional to 812,869.82, 1,220,061.27 and 413,809.35

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Solution

The fourth proportional to 812,869.82, 1,220,061.27 and 413,809.35 is: 621,099.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,869.82 : 1,220,061.27 = 413,809.35 : x
  2. Step 2: Convert to fraction form
    812,869.82/1,220,061.27 = 413,809.35/x
  3. Step 3: Cross multiply
    812,869.82x = 1,220,061.27 × 413,809.35
  4. Step 4: Simplify right side
    812,869.82x = 504,872,761,098.87
  5. Step 5: Solve for x
    x = 504,872,761,098.87/812,869.82
  6. Step 6: Final answer
    x = 621,099.16

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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.