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Finding the Fourth Proportional to 441,166,908.80, 660,474,904.80 and 428,412,324.80

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Solution

The fourth proportional to 441,166,908.80, 660,474,904.80 and 428,412,324.80 is: 641,379,903.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,166,908.80 : 660,474,904.80 = 428,412,324.80 : x
  2. Step 2: Convert to fraction form
    441,166,908.80/660,474,904.80 = 428,412,324.80/x
  3. Step 3: Cross multiply
    441,166,908.80x = 660,474,904.80 × 428,412,324.80
  4. Step 4: Simplify right side
    441,166,908.80x = 282,955,589,437,426,656
  5. Step 5: Solve for x
    x = 282,955,589,437,426,656/441,166,908.80
  6. Step 6: Final answer
    x = 641,379,903.60

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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.