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Finding the Fourth Proportional to 603,783.38, 905,619.54 and 204,378.50

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Solution

The fourth proportional to 603,783.38, 905,619.54 and 204,378.50 is: 306,548.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,783.38 : 905,619.54 = 204,378.50 : x
  2. Step 2: Convert to fraction form
    603,783.38/905,619.54 = 204,378.50/x
  3. Step 3: Cross multiply
    603,783.38x = 905,619.54 × 204,378.50
  4. Step 4: Simplify right side
    603,783.38x = 185,089,163,155.89
  5. Step 5: Solve for x
    x = 185,089,163,155.89/603,783.38
  6. Step 6: Final answer
    x = 306,548.95

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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.