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Finding the Fourth Proportional to 1,252,968.96, 1,728,797.64 and 762,932.72

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Solution

The fourth proportional to 1,252,968.96, 1,728,797.64 and 762,932.72 is: 1,052,664.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252,968.96 : 1,728,797.64 = 762,932.72 : x
  2. Step 2: Convert to fraction form
    1,252,968.96/1,728,797.64 = 762,932.72/x
  3. Step 3: Cross multiply
    1,252,968.96x = 1,728,797.64 × 762,932.72
  4. Step 4: Simplify right side
    1,252,968.96x = 1,318,956,285,814.78
  5. Step 5: Solve for x
    x = 1,318,956,285,814.78/1,252,968.96
  6. Step 6: Final answer
    x = 1,052,664.77

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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.