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Finding the Fourth Proportional to 842,969.36, 1,264,191 and 281,872.88

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Solution

The fourth proportional to 842,969.36, 1,264,191 and 281,872.88 is: 422,721.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,969.36 : 1,264,191 = 281,872.88 : x
  2. Step 2: Convert to fraction form
    842,969.36/1,264,191 = 281,872.88/x
  3. Step 3: Cross multiply
    842,969.36x = 1,264,191 × 281,872.88
  4. Step 4: Simplify right side
    842,969.36x = 356,341,158,040.08
  5. Step 5: Solve for x
    x = 356,341,158,040.08/842,969.36
  6. Step 6: Final answer
    x = 422,721.36

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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.