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Finding the Fourth Proportional to 994,327.80, 1,491,491.70 and 329,393.40

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Solution

The fourth proportional to 994,327.80, 1,491,491.70 and 329,393.40 is: 494,090.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    994,327.80 : 1,491,491.70 = 329,393.40 : x
  2. Step 2: Convert to fraction form
    994,327.80/1,491,491.70 = 329,393.40/x
  3. Step 3: Cross multiply
    994,327.80x = 1,491,491.70 × 329,393.40
  4. Step 4: Simplify right side
    994,327.80x = 491,287,522,134.78
  5. Step 5: Solve for x
    x = 491,287,522,134.78/994,327.80
  6. Step 6: Final answer
    x = 494,090.10

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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.