Finding the Fourth Proportional to 7,158,891.68, 9,879,271.92 and 3,939,627.68
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Solution
The fourth proportional to 7,158,891.68, 9,879,271.92 and 3,939,627.68 is: 5,436,686.97
Step by Step Solution
- Step 1: Write the proportion equation
7,158,891.68 : 9,879,271.92 = 3,939,627.68 : x - Step 2: Convert to fraction form
7,158,891.68/9,879,271.92 = 3,939,627.68/x - Step 3: Cross multiply
7,158,891.68x = 9,879,271.92 × 3,939,627.68 - Step 4: Simplify right side
7,158,891.68x = 38,920,653,114,278.75 - Step 5: Solve for x
x = 38,920,653,114,278.75/7,158,891.68 - Step 6: Final answer
x = 5,436,686.97
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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.