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Finding the Fourth Proportional to 445,790.72, 616,004.52 and 324,720.56

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Solution

The fourth proportional to 445,790.72, 616,004.52 and 324,720.56 is: 448,706.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,790.72 : 616,004.52 = 324,720.56 : x
  2. Step 2: Convert to fraction form
    445,790.72/616,004.52 = 324,720.56/x
  3. Step 3: Cross multiply
    445,790.72x = 616,004.52 × 324,720.56
  4. Step 4: Simplify right side
    445,790.72x = 200,029,332,696.93
  5. Step 5: Solve for x
    x = 200,029,332,696.93/445,790.72
  6. Step 6: Final answer
    x = 448,706.81

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1.5x scale

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.