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Finding the Fourth Proportional to 722,093.82, 996,505.01 and 395,420.63

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Solution

The fourth proportional to 722,093.82, 996,505.01 and 395,420.63 is: 545,688.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,093.82 : 996,505.01 = 395,420.63 : x
  2. Step 2: Convert to fraction form
    722,093.82/996,505.01 = 395,420.63/x
  3. Step 3: Cross multiply
    722,093.82x = 996,505.01 × 395,420.63
  4. Step 4: Simplify right side
    722,093.82x = 394,038,631,892.73
  5. Step 5: Solve for x
    x = 394,038,631,892.73/722,093.82
  6. Step 6: Final answer
    x = 545,688.97

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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.