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Finding the Fourth Proportional to 994,374.40, 1,491,620.54 and 311,389

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Solution

The fourth proportional to 994,374.40, 1,491,620.54 and 311,389 is: 467,101.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    994,374.40 : 1,491,620.54 = 311,389 : x
  2. Step 2: Convert to fraction form
    994,374.40/1,491,620.54 = 311,389/x
  3. Step 3: Cross multiply
    994,374.40x = 1,491,620.54 × 311,389
  4. Step 4: Simplify right side
    994,374.40x = 464,474,228,330.06
  5. Step 5: Solve for x
    x = 464,474,228,330.06/994,374.40
  6. Step 6: Final answer
    x = 467,101.96

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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.