Finding the Fourth Proportional to 7,121,406.36, 9,827,550.50 and 3,858,221.25
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Solution
The fourth proportional to 7,121,406.36, 9,827,550.50 and 3,858,221.25 is: 5,324,350.59
Step by Step Solution
- Step 1: Write the proportion equation
7,121,406.36 : 9,827,550.50 = 3,858,221.25 : x - Step 2: Convert to fraction form
7,121,406.36/9,827,550.50 = 3,858,221.25/x - Step 3: Cross multiply
7,121,406.36x = 9,827,550.50 × 3,858,221.25 - Step 4: Simplify right side
7,121,406.36x = 37,916,864,155,257.02 - Step 5: Solve for x
x = 37,916,864,155,257.02/7,121,406.36 - Step 6: Final answer
x = 5,324,350.59
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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.