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Finding the Fourth Proportional to 603,911.40, 906,255.90 and 351,191.40

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Solution

The fourth proportional to 603,911.40, 906,255.90 and 351,191.40 is: 527,013.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,911.40 : 906,255.90 = 351,191.40 : x
  2. Step 2: Convert to fraction form
    603,911.40/906,255.90 = 351,191.40/x
  3. Step 3: Cross multiply
    603,911.40x = 906,255.90 × 351,191.40
  4. Step 4: Simplify right side
    603,911.40x = 318,269,278,279.26
  5. Step 5: Solve for x
    x = 318,269,278,279.26/603,911.40
  6. Step 6: Final answer
    x = 527,013.20

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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.