Home / 1,311,781.70-1,963,228.31-806,662.61

Finding the Fourth Proportional to 1,311,781.70, 1,963,228.31 and 806,662.61

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Solution

The fourth proportional to 1,311,781.70, 1,963,228.31 and 806,662.61 is: 1,207,260.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,781.70 : 1,963,228.31 = 806,662.61 : x
  2. Step 2: Convert to fraction form
    1,311,781.70/1,963,228.31 = 806,662.61/x
  3. Step 3: Cross multiply
    1,311,781.70x = 1,963,228.31 × 806,662.61
  4. Step 4: Simplify right side
    1,311,781.70x = 1,583,662,858,721.03
  5. Step 5: Solve for x
    x = 1,583,662,858,721.03/1,311,781.70
  6. Step 6: Final answer
    x = 1,207,260.98

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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.