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Finding the Fourth Proportional to 446,389.60, 667,640.40 and 399,344.80

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Solution

The fourth proportional to 446,389.60, 667,640.40 and 399,344.80 is: 597,278.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,389.60 : 667,640.40 = 399,344.80 : x
  2. Step 2: Convert to fraction form
    446,389.60/667,640.40 = 399,344.80/x
  3. Step 3: Cross multiply
    446,389.60x = 667,640.40 × 399,344.80
  4. Step 4: Simplify right side
    446,389.60x = 266,618,722,009.92
  5. Step 5: Solve for x
    x = 266,618,722,009.92/446,389.60
  6. Step 6: Final answer
    x = 597,278.08

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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.