Finding the Fourth Proportional to 7,158,898.68, 9,879,281.64 and 3,939,634.68
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Solution
The fourth proportional to 7,158,898.68, 9,879,281.64 and 3,939,634.68 is: 5,436,696.66
Step by Step Solution
- Step 1: Write the proportion equation
7,158,898.68 : 9,879,281.64 = 3,939,634.68 : x - Step 2: Convert to fraction form
7,158,898.68/9,879,281.64 = 3,939,634.68/x - Step 3: Cross multiply
7,158,898.68x = 9,879,281.64 × 3,939,634.68 - Step 4: Simplify right side
7,158,898.68x = 38,920,760,562,431.28 - Step 5: Solve for x
x = 38,920,760,562,431.28/7,158,898.68 - Step 6: Final answer
x = 5,436,696.66
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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.