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Finding the Fourth Proportional to 494,274.60, 682,128.36 and 279,434.52

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Solution

The fourth proportional to 494,274.60, 682,128.36 and 279,434.52 is: 385,636.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,274.60 : 682,128.36 = 279,434.52 : x
  2. Step 2: Convert to fraction form
    494,274.60/682,128.36 = 279,434.52/x
  3. Step 3: Cross multiply
    494,274.60x = 682,128.36 × 279,434.52
  4. Step 4: Simplify right side
    494,274.60x = 190,610,210,854.99
  5. Step 5: Solve for x
    x = 190,610,210,854.99/494,274.60
  6. Step 6: Final answer
    x = 385,636.27

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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.