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Finding the Fourth Proportional to 603,676.30, 905,623.80 and 303,401.20

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Solution

The fourth proportional to 603,676.30, 905,623.80 and 303,401.20 is: 455,156.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,676.30 : 905,623.80 = 303,401.20 : x
  2. Step 2: Convert to fraction form
    603,676.30/905,623.80 = 303,401.20/x
  3. Step 3: Cross multiply
    603,676.30x = 905,623.80 × 303,401.20
  4. Step 4: Simplify right side
    603,676.30x = 274,767,347,668.56
  5. Step 5: Solve for x
    x = 274,767,347,668.56/603,676.30
  6. Step 6: Final answer
    x = 455,156.76

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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.