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Finding the Fourth Proportional to 492,504.89, 679,627.50 and 285,757.29

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Solution

The fourth proportional to 492,504.89, 679,627.50 and 285,757.29 is: 394,328.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,504.89 : 679,627.50 = 285,757.29 : x
  2. Step 2: Convert to fraction form
    492,504.89/679,627.50 = 285,757.29/x
  3. Step 3: Cross multiply
    492,504.89x = 679,627.50 × 285,757.29
  4. Step 4: Simplify right side
    492,504.89x = 194,208,512,609.48
  5. Step 5: Solve for x
    x = 194,208,512,609.48/492,504.89
  6. Step 6: Final answer
    x = 394,328.09

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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.