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Finding the Fourth Proportional to 494,430.94, 682,328.08 and 279,603

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Solution

The fourth proportional to 494,430.94, 682,328.08 and 279,603 is: 385,859.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,430.94 : 682,328.08 = 279,603 : x
  2. Step 2: Convert to fraction form
    494,430.94/682,328.08 = 279,603/x
  3. Step 3: Cross multiply
    494,430.94x = 682,328.08 × 279,603
  4. Step 4: Simplify right side
    494,430.94x = 190,780,978,152.24
  5. Step 5: Solve for x
    x = 190,780,978,152.24/494,430.94
  6. Step 6: Final answer
    x = 385,859.71

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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.