Home / 637,706,738.40-956,560,107.60-420,028,504.80

Finding the Fourth Proportional to 637,706,738.40, 956,560,107.60 and 420,028,504.80

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Solution

The fourth proportional to 637,706,738.40, 956,560,107.60 and 420,028,504.80 is: 630,042,757.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,706,738.40 : 956,560,107.60 = 420,028,504.80 : x
  2. Step 2: Convert to fraction form
    637,706,738.40/956,560,107.60 = 420,028,504.80/x
  3. Step 3: Cross multiply
    637,706,738.40x = 956,560,107.60 × 420,028,504.80
  4. Step 4: Simplify right side
    637,706,738.40x = 401,782,511,746,555,136
  5. Step 5: Solve for x
    x = 401,782,511,746,555,136/637,706,738.40
  6. Step 6: Final answer
    x = 630,042,757.20

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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.