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Finding the Fourth Proportional to 1,663,382.40, 2,491,574.40 and 1,383,446.40

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Solution

The fourth proportional to 1,663,382.40, 2,491,574.40 and 1,383,446.40 is: 2,072,259.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,663,382.40 : 2,491,574.40 = 1,383,446.40 : x
  2. Step 2: Convert to fraction form
    1,663,382.40/2,491,574.40 = 1,383,446.40/x
  3. Step 3: Cross multiply
    1,663,382.40x = 2,491,574.40 × 1,383,446.40
  4. Step 4: Simplify right side
    1,663,382.40x = 3,446,959,634,012.16
  5. Step 5: Solve for x
    x = 3,446,959,634,012.16/1,663,382.40
  6. Step 6: Final answer
    x = 2,072,259.29

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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.