Finding the Fourth Proportional to 7,158,802.26, 9,879,148.72 and 3,939,538.26
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Solution
The fourth proportional to 7,158,802.26, 9,879,148.72 and 3,939,538.26 is: 5,436,563.68
Step by Step Solution
- Step 1: Write the proportion equation
7,158,802.26 : 9,879,148.72 = 3,939,538.26 : x - Step 2: Convert to fraction form
7,158,802.26/9,879,148.72 = 3,939,538.26/x - Step 3: Cross multiply
7,158,802.26x = 9,879,148.72 × 3,939,538.26 - Step 4: Simplify right side
7,158,802.26x = 38,919,284,358,670.03 - Step 5: Solve for x
x = 38,919,284,358,670.03/7,158,802.26 - Step 6: Final answer
x = 5,436,563.68
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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.