Finding the Fourth Proportional to 7,932,431.42, 11,899,706.32 and 3,138,999.68
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Solution
The fourth proportional to 7,932,431.42, 11,899,706.32 and 3,138,999.68 is: 4,708,918.66
Step by Step Solution
- Step 1: Write the proportion equation
7,932,431.42 : 11,899,706.32 = 3,138,999.68 : x - Step 2: Convert to fraction form
7,932,431.42/11,899,706.32 = 3,138,999.68/x - Step 3: Cross multiply
7,932,431.42x = 11,899,706.32 × 3,138,999.68 - Step 4: Simplify right side
7,932,431.42x = 37,353,174,330,573.98 - Step 5: Solve for x
x = 37,353,174,330,573.98/7,932,431.42 - Step 6: Final answer
x = 4,708,918.66
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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.