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Finding the Fourth Proportional to 626,131.73, 864,062.06 and 354,193.86

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Solution

The fourth proportional to 626,131.73, 864,062.06 and 354,193.86 is: 488,787.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,131.73 : 864,062.06 = 354,193.86 : x
  2. Step 2: Convert to fraction form
    626,131.73/864,062.06 = 354,193.86/x
  3. Step 3: Cross multiply
    626,131.73x = 864,062.06 × 354,193.86
  4. Step 4: Simplify right side
    626,131.73x = 306,045,474,539.98
  5. Step 5: Solve for x
    x = 306,045,474,539.98/626,131.73
  6. Step 6: Final answer
    x = 488,787.68

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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.