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Finding the Fourth Proportional to 494,605.32, 682,528.32 and 279,788.46

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Solution

The fourth proportional to 494,605.32, 682,528.32 and 279,788.46 is: 386,092.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,605.32 : 682,528.32 = 279,788.46 : x
  2. Step 2: Convert to fraction form
    494,605.32/682,528.32 = 279,788.46/x
  3. Step 3: Cross multiply
    494,605.32x = 682,528.32 × 279,788.46
  4. Step 4: Simplify right side
    494,605.32x = 190,963,547,559.19
  5. Step 5: Solve for x
    x = 190,963,547,559.19/494,605.32
  6. Step 6: Final answer
    x = 386,092.79

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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.