Finding the Fourth Proportional to 8,517,807.20, 11,759,879.76 and 5,422,077.92
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Solution
The fourth proportional to 8,517,807.20, 11,759,879.76 and 5,422,077.92 is: 7,485,844.99
Step by Step Solution
- Step 1: Write the proportion equation
8,517,807.20 : 11,759,879.76 = 5,422,077.92 : x - Step 2: Convert to fraction form
8,517,807.20/11,759,879.76 = 5,422,077.92/x - Step 3: Cross multiply
8,517,807.20x = 11,759,879.76 × 5,422,077.92 - Step 4: Simplify right side
8,517,807.20x = 63,762,984,388,550.90 - Step 5: Solve for x
x = 63,762,984,388,550.90/8,517,807.20 - Step 6: Final answer
x = 7,485,844.99
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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.