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Finding the Fourth Proportional to 1,325,301.90, 1,828,866.38 and 809,917.71

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Solution

The fourth proportional to 1,325,301.90, 1,828,866.38 and 809,917.71 is: 1,117,655.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,301.90 : 1,828,866.38 = 809,917.71 : x
  2. Step 2: Convert to fraction form
    1,325,301.90/1,828,866.38 = 809,917.71/x
  3. Step 3: Cross multiply
    1,325,301.90x = 1,828,866.38 × 809,917.71
  4. Step 4: Simplify right side
    1,325,301.90x = 1,481,231,266,336.00
  5. Step 5: Solve for x
    x = 1,481,231,266,336.00/1,325,301.90
  6. Step 6: Final answer
    x = 1,117,655.73

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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.