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Finding the Fourth Proportional to 801,228, 1,105,694.64 and 443,532

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Solution

The fourth proportional to 801,228, 1,105,694.64 and 443,532 is: 612,074.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,228 : 1,105,694.64 = 443,532 : x
  2. Step 2: Convert to fraction form
    801,228/1,105,694.64 = 443,532/x
  3. Step 3: Cross multiply
    801,228x = 1,105,694.64 × 443,532
  4. Step 4: Simplify right side
    801,228x = 490,410,955,068.48
  5. Step 5: Solve for x
    x = 490,410,955,068.48/801,228
  6. Step 6: Final answer
    x = 612,074.16

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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.