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Finding the Fourth Proportional to 446,145.60, 667,274.40 and 399,100.80

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Solution

The fourth proportional to 446,145.60, 667,274.40 and 399,100.80 is: 596,912.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,145.60 : 667,274.40 = 399,100.80 : x
  2. Step 2: Convert to fraction form
    446,145.60/667,274.40 = 399,100.80/x
  3. Step 3: Cross multiply
    446,145.60x = 667,274.40 × 399,100.80
  4. Step 4: Simplify right side
    446,145.60x = 266,309,746,859.52
  5. Step 5: Solve for x
    x = 266,309,746,859.52/446,145.60
  6. Step 6: Final answer
    x = 596,912.19

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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.