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Finding the Fourth Proportional to 547,768.30, 821,652.45 and 336,721.90

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Solution

The fourth proportional to 547,768.30, 821,652.45 and 336,721.90 is: 505,082.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,768.30 : 821,652.45 = 336,721.90 : x
  2. Step 2: Convert to fraction form
    547,768.30/821,652.45 = 336,721.90/x
  3. Step 3: Cross multiply
    547,768.30x = 821,652.45 × 336,721.90
  4. Step 4: Simplify right side
    547,768.30x = 276,668,374,103.66
  5. Step 5: Solve for x
    x = 276,668,374,103.66/547,768.30
  6. Step 6: Final answer
    x = 505,082.85

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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.