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Finding the Fourth Proportional to 994,671.90, 1,491,023.70 and 488,818.80

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Solution

The fourth proportional to 994,671.90, 1,491,023.70 and 488,818.80 is: 732,744.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    994,671.90 : 1,491,023.70 = 488,818.80 : x
  2. Step 2: Convert to fraction form
    994,671.90/1,491,023.70 = 488,818.80/x
  3. Step 3: Cross multiply
    994,671.90x = 1,491,023.70 × 488,818.80
  4. Step 4: Simplify right side
    994,671.90x = 728,840,415,805.56
  5. Step 5: Solve for x
    x = 728,840,415,805.56/994,671.90
  6. Step 6: Final answer
    x = 732,744.55

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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.