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Finding the Fourth Proportional to 888,272, 1,225,832.64 and 485,872.64

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Solution

The fourth proportional to 888,272, 1,225,832.64 and 485,872.64 is: 670,513.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,272 : 1,225,832.64 = 485,872.64 : x
  2. Step 2: Convert to fraction form
    888,272/1,225,832.64 = 485,872.64/x
  3. Step 3: Cross multiply
    888,272x = 1,225,832.64 × 485,872.64
  4. Step 4: Simplify right side
    888,272x = 595,598,540,994.97
  5. Step 5: Solve for x
    x = 595,598,540,994.97/888,272
  6. Step 6: Final answer
    x = 670,513.70

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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.