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Finding the Fourth Proportional to 489,874.45, 675,980.08 and 274,965.25

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Solution

The fourth proportional to 489,874.45, 675,980.08 and 274,965.25 is: 379,425.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,874.45 : 675,980.08 = 274,965.25 : x
  2. Step 2: Convert to fraction form
    489,874.45/675,980.08 = 274,965.25/x
  3. Step 3: Cross multiply
    489,874.45x = 675,980.08 × 274,965.25
  4. Step 4: Simplify right side
    489,874.45x = 185,871,031,692.22
  5. Step 5: Solve for x
    x = 185,871,031,692.22/489,874.45
  6. Step 6: Final answer
    x = 379,425.85

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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.