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Finding the Fourth Proportional to 603,668.30, 905,611.80 and 303,393.20

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Solution

The fourth proportional to 603,668.30, 905,611.80 and 303,393.20 is: 455,144.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,668.30 : 905,611.80 = 303,393.20 : x
  2. Step 2: Convert to fraction form
    603,668.30/905,611.80 = 303,393.20/x
  3. Step 3: Cross multiply
    603,668.30x = 905,611.80 × 303,393.20
  4. Step 4: Simplify right side
    603,668.30x = 274,756,461,959.76
  5. Step 5: Solve for x
    x = 274,756,461,959.76/603,668.30
  6. Step 6: Final answer
    x = 455,144.76

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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.