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Finding the Fourth Proportional to 545,446.28, 752,768.18 and 303,728.78

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Solution

The fourth proportional to 545,446.28, 752,768.18 and 303,728.78 is: 419,174.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,446.28 : 752,768.18 = 303,728.78 : x
  2. Step 2: Convert to fraction form
    545,446.28/752,768.18 = 303,728.78/x
  3. Step 3: Cross multiply
    545,446.28x = 752,768.18 × 303,728.78
  4. Step 4: Simplify right side
    545,446.28x = 228,637,355,651.74
  5. Step 5: Solve for x
    x = 228,637,355,651.74/545,446.28
  6. Step 6: Final answer
    x = 419,174.84

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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.