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Finding the Fourth Proportional to 492,503.39, 679,625.44 and 285,755.78

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Solution

The fourth proportional to 492,503.39, 679,625.44 and 285,755.78 is: 394,326.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,503.39 : 679,625.44 = 285,755.78 : x
  2. Step 2: Convert to fraction form
    492,503.39/679,625.44 = 285,755.78/x
  3. Step 3: Cross multiply
    492,503.39x = 679,625.44 × 285,755.78
  4. Step 4: Simplify right side
    492,503.39x = 194,206,898,699.72
  5. Step 5: Solve for x
    x = 194,206,898,699.72/492,503.39
  6. Step 6: Final answer
    x = 394,326.02

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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.