Home / 1,123,610,401.20-1,685,415,601.80-987,561,505.20

Finding the Fourth Proportional to 1,123,610,401.20, 1,685,415,601.80 and 987,561,505.20

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Solution

The fourth proportional to 1,123,610,401.20, 1,685,415,601.80 and 987,561,505.20 is: 1,481,342,257.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,610,401.20 : 1,685,415,601.80 = 987,561,505.20 : x
  2. Step 2: Convert to fraction form
    1,123,610,401.20/1,685,415,601.80 = 987,561,505.20/x
  3. Step 3: Cross multiply
    1,123,610,401.20x = 1,685,415,601.80 × 987,561,505.20
  4. Step 4: Simplify right side
    1,123,610,401.20x = 1,664,451,568,601,171,968
  5. Step 5: Solve for x
    x = 1,664,451,568,601,171,968/1,123,610,401.20
  6. Step 6: Final answer
    x = 1,481,342,257.80

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1.5x scale

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.