Finding the Fourth Proportional to 5,071,778.69, 6,999,772.29 and 3,138,661.85
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Solution
The fourth proportional to 5,071,778.69, 6,999,772.29 and 3,138,661.85 is: 4,331,797.50
Step by Step Solution
- Step 1: Write the proportion equation
5,071,778.69 : 6,999,772.29 = 3,138,661.85 : x - Step 2: Convert to fraction form
5,071,778.69/6,999,772.29 = 3,138,661.85/x - Step 3: Cross multiply
5,071,778.69x = 6,999,772.29 × 3,138,661.85 - Step 4: Simplify right side
5,071,778.69x = 21,969,918,245,310.14 - Step 5: Solve for x
x = 21,969,918,245,310.14/5,071,778.69 - Step 6: Final answer
x = 4,331,797.50
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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.