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Finding the Fourth Proportional to 998,576, 1,378,039.80 and 545,867

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Solution

The fourth proportional to 998,576, 1,378,039.80 and 545,867 is: 753,299.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,576 : 1,378,039.80 = 545,867 : x
  2. Step 2: Convert to fraction form
    998,576/1,378,039.80 = 545,867/x
  3. Step 3: Cross multiply
    998,576x = 1,378,039.80 × 545,867
  4. Step 4: Simplify right side
    998,576x = 752,226,451,506.60
  5. Step 5: Solve for x
    x = 752,226,451,506.60/998,576
  6. Step 6: Final answer
    x = 753,299.15

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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.