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Finding the Fourth Proportional to 494,416.76, 682,291.40 and 279,564.48

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Solution

The fourth proportional to 494,416.76, 682,291.40 and 279,564.48 is: 385,796.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,416.76 : 682,291.40 = 279,564.48 : x
  2. Step 2: Convert to fraction form
    494,416.76/682,291.40 = 279,564.48/x
  3. Step 3: Cross multiply
    494,416.76x = 682,291.40 × 279,564.48
  4. Step 4: Simplify right side
    494,416.76x = 190,744,439,051.65
  5. Step 5: Solve for x
    x = 190,744,439,051.65/494,416.76
  6. Step 6: Final answer
    x = 385,796.88

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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.