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Finding the Fourth Proportional to 490,923, 677,469.51 and 276,058.50

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Solution

The fourth proportional to 490,923, 677,469.51 and 276,058.50 is: 380,958.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,923 : 677,469.51 = 276,058.50 : x
  2. Step 2: Convert to fraction form
    490,923/677,469.51 = 276,058.50/x
  3. Step 3: Cross multiply
    490,923x = 677,469.51 × 276,058.50
  4. Step 4: Simplify right side
    490,923x = 187,021,216,726.34
  5. Step 5: Solve for x
    x = 187,021,216,726.34/490,923
  6. Step 6: Final answer
    x = 380,958.35

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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.