Finding the Fourth Proportional to 3,138,993.16, 4,331,511.06 and 1,762,021.48
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Solution
The fourth proportional to 3,138,993.16, 4,331,511.06 and 1,762,021.48 is: 2,431,421.52
Step by Step Solution
- Step 1: Write the proportion equation
3,138,993.16 : 4,331,511.06 = 1,762,021.48 : x - Step 2: Convert to fraction form
3,138,993.16/4,331,511.06 = 1,762,021.48/x - Step 3: Cross multiply
3,138,993.16x = 4,331,511.06 × 1,762,021.48 - Step 4: Simplify right side
3,138,993.16x = 7,632,215,528,577.57 - Step 5: Solve for x
x = 7,632,215,528,577.57/3,138,993.16 - Step 6: Final answer
x = 2,431,421.52
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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.