Finding the Fourth Proportional to 7,981,657.20, 11,972,485.80 and 4,790,386.80
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Solution
The fourth proportional to 7,981,657.20, 11,972,485.80 and 4,790,386.80 is: 7,185,580.20
Step by Step Solution
- Step 1: Write the proportion equation
7,981,657.20 : 11,972,485.80 = 4,790,386.80 : x - Step 2: Convert to fraction form
7,981,657.20/11,972,485.80 = 4,790,386.80/x - Step 3: Cross multiply
7,981,657.20x = 11,972,485.80 × 4,790,386.80 - Step 4: Simplify right side
7,981,657.20x = 57,352,837,939,507.44 - Step 5: Solve for x
x = 57,352,837,939,507.44/7,981,657.20 - Step 6: Final answer
x = 7,185,580.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.