Finding the Fourth Proportional to 6,721,405.20, 9,273,944.79 and 3,820,567.68
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Solution
The fourth proportional to 6,721,405.20, 9,273,944.79 and 3,820,567.68 is: 5,271,477.12
Step by Step Solution
- Step 1: Write the proportion equation
6,721,405.20 : 9,273,944.79 = 3,820,567.68 : x - Step 2: Convert to fraction form
6,721,405.20/9,273,944.79 = 3,820,567.68/x - Step 3: Cross multiply
6,721,405.20x = 9,273,944.79 × 3,820,567.68 - Step 4: Simplify right side
6,721,405.20x = 35,431,733,730,778.38 - Step 5: Solve for x
x = 35,431,733,730,778.38/6,721,405.20 - Step 6: Final answer
x = 5,271,477.12
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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.