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Finding the Fourth Proportional to 603,194.40, 905,482.80 and 354,016.80

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Solution

The fourth proportional to 603,194.40, 905,482.80 and 354,016.80 is: 531,430.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,194.40 : 905,482.80 = 354,016.80 : x
  2. Step 2: Convert to fraction form
    603,194.40/905,482.80 = 354,016.80/x
  3. Step 3: Cross multiply
    603,194.40x = 905,482.80 × 354,016.80
  4. Step 4: Simplify right side
    603,194.40x = 320,556,123,311.04
  5. Step 5: Solve for x
    x = 320,556,123,311.04/603,194.40
  6. Step 6: Final answer
    x = 531,430.87

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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.