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Finding the Fourth Proportional to 998,880, 1,498,321.44 and 407,904

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Solution

The fourth proportional to 998,880, 1,498,321.44 and 407,904 is: 611,856.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,880 : 1,498,321.44 = 407,904 : x
  2. Step 2: Convert to fraction form
    998,880/1,498,321.44 = 407,904/x
  3. Step 3: Cross multiply
    998,880x = 1,498,321.44 × 407,904
  4. Step 4: Simplify right side
    998,880x = 611,171,308,661.76
  5. Step 5: Solve for x
    x = 611,171,308,661.76/998,880
  6. Step 6: Final answer
    x = 611,856.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.