Finding the Fourth Proportional to 18,201,325,631.21, 27,301,988,446.83 and 5,115,122,447.21
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Solution
The fourth proportional to 18,201,325,631.21, 27,301,988,446.83 and 5,115,122,447.21 is: 7,672,683,670.82
Step by Step Solution
- Step 1: Write the proportion equation
18,201,325,631.21 : 27,301,988,446.83 = 5,115,122,447.21 : x - Step 2: Convert to fraction form
18,201,325,631.21/27,301,988,446.83 = 5,115,122,447.21/x - Step 3: Cross multiply
18,201,325,631.21x = 27,301,988,446.83 × 5,115,122,447.21 - Step 4: Simplify right side
18,201,325,631.21x = 139,653,013,957,848,219,648 - Step 5: Solve for x
x = 139,653,013,957,848,219,648/18,201,325,631.21 - Step 6: Final answer
x = 7,672,683,670.82
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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.