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Finding the Fourth Proportional to 1,853,863.80, 2,774,890.80 and 1,322,422.80

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Solution

The fourth proportional to 1,853,863.80, 2,774,890.80 and 1,322,422.80 is: 1,979,422.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,853,863.80 : 2,774,890.80 = 1,322,422.80 : x
  2. Step 2: Convert to fraction form
    1,853,863.80/2,774,890.80 = 1,322,422.80/x
  3. Step 3: Cross multiply
    1,853,863.80x = 2,774,890.80 × 1,322,422.80
  4. Step 4: Simplify right side
    1,853,863.80x = 3,669,578,861,430.24
  5. Step 5: Solve for x
    x = 3,669,578,861,430.24/1,853,863.80
  6. Step 6: Final answer
    x = 1,979,422.04

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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.