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Finding the Fourth Proportional to 603,685.80, 905,200.65 and 204,120.90

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Solution

The fourth proportional to 603,685.80, 905,200.65 and 204,120.90 is: 306,070.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,685.80 : 905,200.65 = 204,120.90 : x
  2. Step 2: Convert to fraction form
    603,685.80/905,200.65 = 204,120.90/x
  3. Step 3: Cross multiply
    603,685.80x = 905,200.65 × 204,120.90
  4. Step 4: Simplify right side
    603,685.80x = 184,770,371,358.59
  5. Step 5: Solve for x
    x = 184,770,371,358.59/603,685.80
  6. Step 6: Final answer
    x = 306,070.43

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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.