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Finding the Fourth Proportional to 494,064.02, 681,730.62 and 287,378.12

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Solution

The fourth proportional to 494,064.02, 681,730.62 and 287,378.12 is: 396,536.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,064.02 : 681,730.62 = 287,378.12 : x
  2. Step 2: Convert to fraction form
    494,064.02/681,730.62 = 287,378.12/x
  3. Step 3: Cross multiply
    494,064.02x = 681,730.62 × 287,378.12
  4. Step 4: Simplify right side
    494,064.02x = 195,914,463,922.03
  5. Step 5: Solve for x
    x = 195,914,463,922.03/494,064.02
  6. Step 6: Final answer
    x = 396,536.59

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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.