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Finding the Fourth Proportional to 1,321,484.94, 1,823,650.47 and 717,872.94

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Solution

The fourth proportional to 1,321,484.94, 1,823,650.47 and 717,872.94 is: 990,665.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,484.94 : 1,823,650.47 = 717,872.94 : x
  2. Step 2: Convert to fraction form
    1,321,484.94/1,823,650.47 = 717,872.94/x
  3. Step 3: Cross multiply
    1,321,484.94x = 1,823,650.47 × 717,872.94
  4. Step 4: Simplify right side
    1,321,484.94x = 1,309,149,324,431.28
  5. Step 5: Solve for x
    x = 1,309,149,324,431.28/1,321,484.94
  6. Step 6: Final answer
    x = 990,665.34

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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.