Finding the Fourth Proportional to 7,189,831.44, 9,921,916.89 and 3,926,647.08
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Solution
The fourth proportional to 7,189,831.44, 9,921,916.89 and 3,926,647.08 is: 5,418,745.39
Step by Step Solution
- Step 1: Write the proportion equation
7,189,831.44 : 9,921,916.89 = 3,926,647.08 : x - Step 2: Convert to fraction form
7,189,831.44/9,921,916.89 = 3,926,647.08/x - Step 3: Cross multiply
7,189,831.44x = 9,921,916.89 × 3,926,647.08 - Step 4: Simplify right side
7,189,831.44x = 38,959,865,984,121.19 - Step 5: Solve for x
x = 38,959,865,984,121.19/7,189,831.44 - Step 6: Final answer
x = 5,418,745.39
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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.