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Finding the Fourth Proportional to 494,431.32, 682,329.60 and 279,566.82

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Solution

The fourth proportional to 494,431.32, 682,329.60 and 279,566.82 is: 385,810.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,431.32 : 682,329.60 = 279,566.82 : x
  2. Step 2: Convert to fraction form
    494,431.32/682,329.60 = 279,566.82/x
  3. Step 3: Cross multiply
    494,431.32x = 682,329.60 × 279,566.82
  4. Step 4: Simplify right side
    494,431.32x = 190,756,716,463.87
  5. Step 5: Solve for x
    x = 190,756,716,463.87/494,431.32
  6. Step 6: Final answer
    x = 385,810.34

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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.