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Finding the Fourth Proportional to 668,920.77, 923,105.84 and 362,989.44

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Solution

The fourth proportional to 668,920.77, 923,105.84 and 362,989.44 is: 500,922.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,920.77 : 923,105.84 = 362,989.44 : x
  2. Step 2: Convert to fraction form
    668,920.77/923,105.84 = 362,989.44/x
  3. Step 3: Cross multiply
    668,920.77x = 923,105.84 × 362,989.44
  4. Step 4: Simplify right side
    668,920.77x = 335,077,670,107.38
  5. Step 5: Solve for x
    x = 335,077,670,107.38/668,920.77
  6. Step 6: Final answer
    x = 500,922.81

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Double scale
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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.