Finding the Fourth Proportional to 5,218,173.25, 7,201,419.69 and 3,013,129.15
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Solution
The fourth proportional to 5,218,173.25, 7,201,419.69 and 3,013,129.15 is: 4,158,314.90
Step by Step Solution
- Step 1: Write the proportion equation
5,218,173.25 : 7,201,419.69 = 3,013,129.15 : x - Step 2: Convert to fraction form
5,218,173.25/7,201,419.69 = 3,013,129.15/x - Step 3: Cross multiply
5,218,173.25x = 7,201,419.69 × 3,013,129.15 - Step 4: Simplify right side
5,218,173.25x = 21,698,807,589,322.96 - Step 5: Solve for x
x = 21,698,807,589,322.96/5,218,173.25 - Step 6: Final answer
x = 4,158,314.90
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.