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Finding the Fourth Proportional to 656,786.63, 985,221.48 and 277,636.70

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Solution

The fourth proportional to 656,786.63, 985,221.48 and 277,636.70 is: 416,472.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,786.63 : 985,221.48 = 277,636.70 : x
  2. Step 2: Convert to fraction form
    656,786.63/985,221.48 = 277,636.70/x
  3. Step 3: Cross multiply
    656,786.63x = 985,221.48 × 277,636.70
  4. Step 4: Simplify right side
    656,786.63x = 273,533,640,476.32
  5. Step 5: Solve for x
    x = 273,533,640,476.32/656,786.63
  6. Step 6: Final answer
    x = 416,472.61

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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.