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Finding the Fourth Proportional to 668,857, 922,721.22 and 396,936.34

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Solution

The fourth proportional to 668,857, 922,721.22 and 396,936.34 is: 547,593.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,857 : 922,721.22 = 396,936.34 : x
  2. Step 2: Convert to fraction form
    668,857/922,721.22 = 396,936.34/x
  3. Step 3: Cross multiply
    668,857x = 922,721.22 × 396,936.34
  4. Step 4: Simplify right side
    668,857x = 366,261,583,907.14
  5. Step 5: Solve for x
    x = 366,261,583,907.14/668,857
  6. Step 6: Final answer
    x = 547,593.26

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1.5x scale

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.