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Finding the Fourth Proportional to 494,411.79, 682,269.32 and 279,556.35

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Solution

The fourth proportional to 494,411.79, 682,269.32 and 279,556.35 is: 385,777.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,411.79 : 682,269.32 = 279,556.35 : x
  2. Step 2: Convert to fraction form
    494,411.79/682,269.32 = 279,556.35/x
  3. Step 3: Cross multiply
    494,411.79x = 682,269.32 × 279,556.35
  4. Step 4: Simplify right side
    494,411.79x = 190,732,720,816.18
  5. Step 5: Solve for x
    x = 190,732,720,816.18/494,411.79
  6. Step 6: Final answer
    x = 385,777.05

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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.