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Finding the Fourth Proportional to 494,785.70, 682,868.56 and 277,077.26

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Solution

The fourth proportional to 494,785.70, 682,868.56 and 277,077.26 is: 382,402.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,785.70 : 682,868.56 = 277,077.26 : x
  2. Step 2: Convert to fraction form
    494,785.70/682,868.56 = 277,077.26/x
  3. Step 3: Cross multiply
    494,785.70x = 682,868.56 × 277,077.26
  4. Step 4: Simplify right side
    494,785.70x = 189,207,349,544.95
  5. Step 5: Solve for x
    x = 189,207,349,544.95/494,785.70
  6. Step 6: Final answer
    x = 382,402.62

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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.