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Finding the Fourth Proportional to 1,322,619.96, 1,823,502.37 and 856,644.78

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Solution

The fourth proportional to 1,322,619.96, 1,823,502.37 and 856,644.78 is: 1,181,060.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322,619.96 : 1,823,502.37 = 856,644.78 : x
  2. Step 2: Convert to fraction form
    1,322,619.96/1,823,502.37 = 856,644.78/x
  3. Step 3: Cross multiply
    1,322,619.96x = 1,823,502.37 × 856,644.78
  4. Step 4: Simplify right side
    1,322,619.96x = 1,562,093,786,578.13
  5. Step 5: Solve for x
    x = 1,562,093,786,578.13/1,322,619.96
  6. Step 6: Final answer
    x = 1,181,060.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.