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Finding the Fourth Proportional to 496,941.40, 685,776.54 and 279,119.80

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Solution

The fourth proportional to 496,941.40, 685,776.54 and 279,119.80 is: 385,183.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,941.40 : 685,776.54 = 279,119.80 : x
  2. Step 2: Convert to fraction form
    496,941.40/685,776.54 = 279,119.80/x
  3. Step 3: Cross multiply
    496,941.40x = 685,776.54 × 279,119.80
  4. Step 4: Simplify right side
    496,941.40x = 191,413,810,689.49
  5. Step 5: Solve for x
    x = 191,413,810,689.49/496,941.40
  6. Step 6: Final answer
    x = 385,183.87

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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.