Finding the Fourth Proportional to 7,178,189.99, 9,904,198.40 and 4,080,468.52
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Solution
The fourth proportional to 7,178,189.99, 9,904,198.40 and 4,080,468.52 is: 5,630,078.03
Step by Step Solution
- Step 1: Write the proportion equation
7,178,189.99 : 9,904,198.40 = 4,080,468.52 : x - Step 2: Convert to fraction form
7,178,189.99/9,904,198.40 = 4,080,468.52/x - Step 3: Cross multiply
7,178,189.99x = 9,904,198.40 × 4,080,468.52 - Step 4: Simplify right side
7,178,189.99x = 40,413,769,737,513.38 - Step 5: Solve for x
x = 40,413,769,737,513.38/7,178,189.99 - Step 6: Final answer
x = 5,630,078.03
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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.