Home / 12,674,861,138.40-19,012,291,707.60-12,137,467,999.20

Finding the Fourth Proportional to 12,674,861,138.40, 19,012,291,707.60 and 12,137,467,999.20

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Solution

The fourth proportional to 12,674,861,138.40, 19,012,291,707.60 and 12,137,467,999.20 is: 18,206,201,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,674,861,138.40 : 19,012,291,707.60 = 12,137,467,999.20 : x
  2. Step 2: Convert to fraction form
    12,674,861,138.40/19,012,291,707.60 = 12,137,467,999.20/x
  3. Step 3: Cross multiply
    12,674,861,138.40x = 19,012,291,707.60 × 12,137,467,999.20
  4. Step 4: Simplify right side
    12,674,861,138.40x = 230,761,082,192,450,519,040
  5. Step 5: Solve for x
    x = 230,761,082,192,450,519,040/12,674,861,138.40
  6. Step 6: Final answer
    x = 18,206,201,998.80

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Double scale
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Similar ratio
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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.