Home / 25,789,040,012.40-38,683,560,018.60-20,177,778,879.60

Finding the Fourth Proportional to 25,789,040,012.40, 38,683,560,018.60 and 20,177,778,879.60

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Solution

The fourth proportional to 25,789,040,012.40, 38,683,560,018.60 and 20,177,778,879.60 is: 30,266,668,319.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,789,040,012.40 : 38,683,560,018.60 = 20,177,778,879.60 : x
  2. Step 2: Convert to fraction form
    25,789,040,012.40/38,683,560,018.60 = 20,177,778,879.60/x
  3. Step 3: Cross multiply
    25,789,040,012.40x = 38,683,560,018.60 × 20,177,778,879.60
  4. Step 4: Simplify right side
    25,789,040,012.40x = 780,548,320,331,045,928,960
  5. Step 5: Solve for x
    x = 780,548,320,331,045,928,960/25,789,040,012.40
  6. Step 6: Final answer
    x = 30,266,668,319.40

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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.