Finding the Fourth Proportional to 7,158,521.44, 9,879,184.80 and 4,102,933.12
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Solution
The fourth proportional to 7,158,521.44, 9,879,184.80 and 4,102,933.12 is: 5,662,291.42
Step by Step Solution
- Step 1: Write the proportion equation
7,158,521.44 : 9,879,184.80 = 4,102,933.12 : x - Step 2: Convert to fraction form
7,158,521.44/9,879,184.80 = 4,102,933.12/x - Step 3: Cross multiply
7,158,521.44x = 9,879,184.80 × 4,102,933.12 - Step 4: Simplify right side
7,158,521.44x = 40,533,634,514,520.58 - Step 5: Solve for x
x = 40,533,634,514,520.58/7,158,521.44 - Step 6: Final answer
x = 5,662,291.42
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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.