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Finding the Fourth Proportional to 1,296,995.04, 1,789,883.46 and 813,580.56

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Solution

The fourth proportional to 1,296,995.04, 1,789,883.46 and 813,580.56 is: 1,122,760.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,995.04 : 1,789,883.46 = 813,580.56 : x
  2. Step 2: Convert to fraction form
    1,296,995.04/1,789,883.46 = 813,580.56/x
  3. Step 3: Cross multiply
    1,296,995.04x = 1,789,883.46 × 813,580.56
  4. Step 4: Simplify right side
    1,296,995.04x = 1,456,214,387,721.54
  5. Step 5: Solve for x
    x = 1,456,214,387,721.54/1,296,995.04
  6. Step 6: Final answer
    x = 1,122,760.18

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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.