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Finding the Fourth Proportional to 801,336, 1,105,845.84 and 438,762.72

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Solution

The fourth proportional to 801,336, 1,105,845.84 and 438,762.72 is: 605,493.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,336 : 1,105,845.84 = 438,762.72 : x
  2. Step 2: Convert to fraction form
    801,336/1,105,845.84 = 438,762.72/x
  3. Step 3: Cross multiply
    801,336x = 1,105,845.84 × 438,762.72
  4. Step 4: Simplify right side
    801,336x = 485,203,928,659.09
  5. Step 5: Solve for x
    x = 485,203,928,659.09/801,336
  6. Step 6: Final answer
    x = 605,493.74

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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.