Finding the Fourth Proportional to 7,391,427.12, 11,090,649.60 and 5,120,446.32
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Solution
The fourth proportional to 7,391,427.12, 11,090,649.60 and 5,120,446.32 is: 7,683,100.30
Step by Step Solution
- Step 1: Write the proportion equation
7,391,427.12 : 11,090,649.60 = 5,120,446.32 : x - Step 2: Convert to fraction form
7,391,427.12/11,090,649.60 = 5,120,446.32/x - Step 3: Cross multiply
7,391,427.12x = 11,090,649.60 × 5,120,446.32 - Step 4: Simplify right side
7,391,427.12x = 56,789,075,930,729.48 - Step 5: Solve for x
x = 56,789,075,930,729.48/7,391,427.12 - Step 6: Final answer
x = 7,683,100.30
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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.