Finding the Fourth Proportional to 7,158,889.68, 9,879,269.16 and 3,939,625.68
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Solution
The fourth proportional to 7,158,889.68, 9,879,269.16 and 3,939,625.68 is: 5,436,684.21
Step by Step Solution
- Step 1: Write the proportion equation
7,158,889.68 : 9,879,269.16 = 3,939,625.68 : x - Step 2: Convert to fraction form
7,158,889.68/9,879,269.16 = 3,939,625.68/x - Step 3: Cross multiply
7,158,889.68x = 9,879,269.16 × 3,939,625.68 - Step 4: Simplify right side
7,158,889.68x = 38,920,622,482,368.03 - Step 5: Solve for x
x = 38,920,622,482,368.03/7,158,889.68 - Step 6: Final answer
x = 5,436,684.21
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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.