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Finding the Fourth Proportional to 722,445.03, 996,963.12 and 395,755.56

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Solution

The fourth proportional to 722,445.03, 996,963.12 and 395,755.56 is: 546,136.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,445.03 : 996,963.12 = 395,755.56 : x
  2. Step 2: Convert to fraction form
    722,445.03/996,963.12 = 395,755.56/x
  3. Step 3: Cross multiply
    722,445.03x = 996,963.12 × 395,755.56
  4. Step 4: Simplify right side
    722,445.03x = 394,553,697,854.95
  5. Step 5: Solve for x
    x = 394,553,697,854.95/722,445.03
  6. Step 6: Final answer
    x = 546,136.64

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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.