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Finding the Fourth Proportional to 801,942, 1,106,679.96 and 479,665.68

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Solution

The fourth proportional to 801,942, 1,106,679.96 and 479,665.68 is: 661,938.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,942 : 1,106,679.96 = 479,665.68 : x
  2. Step 2: Convert to fraction form
    801,942/1,106,679.96 = 479,665.68/x
  3. Step 3: Cross multiply
    801,942x = 1,106,679.96 × 479,665.68
  4. Step 4: Simplify right side
    801,942x = 530,836,395,555.77
  5. Step 5: Solve for x
    x = 530,836,395,555.77/801,942
  6. Step 6: Final answer
    x = 661,938.64

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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.