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Finding the Fourth Proportional to 620,616.96, 931,091.52 and 336,240.54

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Solution

The fourth proportional to 620,616.96, 931,091.52 and 336,240.54 is: 504,450.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,616.96 : 931,091.52 = 336,240.54 : x
  2. Step 2: Convert to fraction form
    620,616.96/931,091.52 = 336,240.54/x
  3. Step 3: Cross multiply
    620,616.96x = 931,091.52 × 336,240.54
  4. Step 4: Simplify right side
    620,616.96x = 313,070,715,474.22
  5. Step 5: Solve for x
    x = 313,070,715,474.22/620,616.96
  6. Step 6: Final answer
    x = 504,450.79

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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.