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Finding the Fourth Proportional to 831,692.54, 1,247,692.54 and 263,216.90

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Solution

The fourth proportional to 831,692.54, 1,247,692.54 and 263,216.90 is: 394,874.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,692.54 : 1,247,692.54 = 263,216.90 : x
  2. Step 2: Convert to fraction form
    831,692.54/1,247,692.54 = 263,216.90/x
  3. Step 3: Cross multiply
    831,692.54x = 1,247,692.54 × 263,216.90
  4. Step 4: Simplify right side
    831,692.54x = 328,413,762,531.93
  5. Step 5: Solve for x
    x = 328,413,762,531.93/831,692.54
  6. Step 6: Final answer
    x = 394,874.00

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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.