Finding the Fourth Proportional to 7,185,890.63, 9,916,763.79 and 3,922,879.34
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Solution
The fourth proportional to 7,185,890.63, 9,916,763.79 and 3,922,879.34 is: 5,413,701.63
Step by Step Solution
- Step 1: Write the proportion equation
7,185,890.63 : 9,916,763.79 = 3,922,879.34 : x - Step 2: Convert to fraction form
7,185,890.63/9,916,763.79 = 3,922,879.34/x - Step 3: Cross multiply
7,185,890.63x = 9,916,763.79 × 3,922,879.34 - Step 4: Simplify right side
7,185,890.63x = 38,902,267,791,451.09 - Step 5: Solve for x
x = 38,902,267,791,451.09/7,185,890.63 - Step 6: Final answer
x = 5,413,701.63
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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.