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Finding the Fourth Proportional to 1,322,761.03, 1,825,798.70 and 863,945.74

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Solution

The fourth proportional to 1,322,761.03, 1,825,798.70 and 863,945.74 is: 1,192,498.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322,761.03 : 1,825,798.70 = 863,945.74 : x
  2. Step 2: Convert to fraction form
    1,322,761.03/1,825,798.70 = 863,945.74/x
  3. Step 3: Cross multiply
    1,322,761.03x = 1,825,798.70 × 863,945.74
  4. Step 4: Simplify right side
    1,322,761.03x = 1,577,391,002,238.18
  5. Step 5: Solve for x
    x = 1,577,391,002,238.18/1,322,761.03
  6. Step 6: Final answer
    x = 1,192,498.85

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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.