Home / 426,384,071.60-639,576,107.40-419,581,626.80

Finding the Fourth Proportional to 426,384,071.60, 639,576,107.40 and 419,581,626.80

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Solution

The fourth proportional to 426,384,071.60, 639,576,107.40 and 419,581,626.80 is: 629,372,440.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,384,071.60 : 639,576,107.40 = 419,581,626.80 : x
  2. Step 2: Convert to fraction form
    426,384,071.60/639,576,107.40 = 419,581,626.80/x
  3. Step 3: Cross multiply
    426,384,071.60x = 639,576,107.40 × 419,581,626.80
  4. Step 4: Simplify right side
    426,384,071.60x = 268,354,383,605,303,520
  5. Step 5: Solve for x
    x = 268,354,383,605,303,520/426,384,071.60
  6. Step 6: Final answer
    x = 629,372,440.20

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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.