Finding the Fourth Proportional to 7,122,439.67, 9,828,975.34 and 3,859,251.82
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Solution
The fourth proportional to 7,122,439.67, 9,828,975.34 and 3,859,251.82 is: 5,325,772.17
Step by Step Solution
- Step 1: Write the proportion equation
7,122,439.67 : 9,828,975.34 = 3,859,251.82 : x - Step 2: Convert to fraction form
7,122,439.67/9,828,975.34 = 3,859,251.82/x - Step 3: Cross multiply
7,122,439.67x = 9,828,975.34 × 3,859,251.82 - Step 4: Simplify right side
7,122,439.67x = 37,932,490,969,630.12 - Step 5: Solve for x
x = 37,932,490,969,630.12/7,122,439.67 - Step 6: Final answer
x = 5,325,772.17
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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.