Finding the Fourth Proportional to 7,239,515.16, 9,990,613.10 and 3,976,406.37
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Solution
The fourth proportional to 7,239,515.16, 9,990,613.10 and 3,976,406.37 is: 5,487,485.93
Step by Step Solution
- Step 1: Write the proportion equation
7,239,515.16 : 9,990,613.10 = 3,976,406.37 : x - Step 2: Convert to fraction form
7,239,515.16/9,990,613.10 = 3,976,406.37/x - Step 3: Cross multiply
7,239,515.16x = 9,990,613.10 × 3,976,406.37 - Step 4: Simplify right side
7,239,515.16x = 39,726,737,580,986.46 - Step 5: Solve for x
x = 39,726,737,580,986.46/7,239,515.16 - Step 6: Final answer
x = 5,487,485.93
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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.