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Finding the Fourth Proportional to 547,309.56, 820,755.21 and 262,919.07

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Solution

The fourth proportional to 547,309.56, 820,755.21 and 262,919.07 is: 394,278.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,309.56 : 820,755.21 = 262,919.07 : x
  2. Step 2: Convert to fraction form
    547,309.56/820,755.21 = 262,919.07/x
  3. Step 3: Cross multiply
    547,309.56x = 820,755.21 × 262,919.07
  4. Step 4: Simplify right side
    547,309.56x = 215,792,196,510.86
  5. Step 5: Solve for x
    x = 215,792,196,510.86/547,309.56
  6. Step 6: Final answer
    x = 394,278.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.