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Finding the Fourth Proportional to 618,530.20, 927,665.70 and 303,213.40

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Solution

The fourth proportional to 618,530.20, 927,665.70 and 303,213.40 is: 454,756.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,530.20 : 927,665.70 = 303,213.40 : x
  2. Step 2: Convert to fraction form
    618,530.20/927,665.70 = 303,213.40/x
  3. Step 3: Cross multiply
    618,530.20x = 927,665.70 × 303,213.40
  4. Step 4: Simplify right side
    618,530.20x = 281,280,670,960.38
  5. Step 5: Solve for x
    x = 281,280,670,960.38/618,530.20
  6. Step 6: Final answer
    x = 454,756.57

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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.