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Finding the Fourth Proportional to 879,468.60, 1,322,021.70 and 817,066.20

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Solution

The fourth proportional to 879,468.60, 1,322,021.70 and 817,066.20 is: 1,228,218.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,468.60 : 1,322,021.70 = 817,066.20 : x
  2. Step 2: Convert to fraction form
    879,468.60/1,322,021.70 = 817,066.20/x
  3. Step 3: Cross multiply
    879,468.60x = 1,322,021.70 × 817,066.20
  4. Step 4: Simplify right side
    879,468.60x = 1,080,179,246,736.54
  5. Step 5: Solve for x
    x = 1,080,179,246,736.54/879,468.60
  6. Step 6: Final answer
    x = 1,228,218.09

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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.