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Finding the Fourth Proportional to 618,487.80, 927,731.70 and 303,559.80

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Solution

The fourth proportional to 618,487.80, 927,731.70 and 303,559.80 is: 455,339.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,487.80 : 927,731.70 = 303,559.80 : x
  2. Step 2: Convert to fraction form
    618,487.80/927,731.70 = 303,559.80/x
  3. Step 3: Cross multiply
    618,487.80x = 927,731.70 × 303,559.80
  4. Step 4: Simplify right side
    618,487.80x = 281,622,049,305.66
  5. Step 5: Solve for x
    x = 281,622,049,305.66/618,487.80
  6. Step 6: Final answer
    x = 455,339.70

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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.