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Finding the Fourth Proportional to 445,979.71, 669,157.22 and 277,640.92

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Solution

The fourth proportional to 445,979.71, 669,157.22 and 277,640.92 is: 416,578.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,979.71 : 669,157.22 = 277,640.92 : x
  2. Step 2: Convert to fraction form
    445,979.71/669,157.22 = 277,640.92/x
  3. Step 3: Cross multiply
    445,979.71x = 669,157.22 × 277,640.92
  4. Step 4: Simplify right side
    445,979.71x = 185,785,426,185.44
  5. Step 5: Solve for x
    x = 185,785,426,185.44/445,979.71
  6. Step 6: Final answer
    x = 416,578.20

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1.5x scale

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.