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Finding the Fourth Proportional to 999,889.44, 1,380,491.28 and 892,274.46

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Solution

The fourth proportional to 999,889.44, 1,380,491.28 and 892,274.46 is: 1,231,913.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,889.44 : 1,380,491.28 = 892,274.46 : x
  2. Step 2: Convert to fraction form
    999,889.44/1,380,491.28 = 892,274.46/x
  3. Step 3: Cross multiply
    999,889.44x = 1,380,491.28 × 892,274.46
  4. Step 4: Simplify right side
    999,889.44x = 1,231,777,111,396.71
  5. Step 5: Solve for x
    x = 1,231,777,111,396.71/999,889.44
  6. Step 6: Final answer
    x = 1,231,913.31

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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.