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Finding the Fourth Proportional to 623,729.57, 860,745.62 and 351,796.64

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Solution

The fourth proportional to 623,729.57, 860,745.62 and 351,796.64 is: 485,478.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,729.57 : 860,745.62 = 351,796.64 : x
  2. Step 2: Convert to fraction form
    623,729.57/860,745.62 = 351,796.64/x
  3. Step 3: Cross multiply
    623,729.57x = 860,745.62 × 351,796.64
  4. Step 4: Simplify right side
    623,729.57x = 302,807,413,586.48
  5. Step 5: Solve for x
    x = 302,807,413,586.48/623,729.57
  6. Step 6: Final answer
    x = 485,478.69

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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.