Finding the Fourth Proportional to 7,858,178.58, 11,787,231.42 and 2,178,384.06
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Solution
The fourth proportional to 7,858,178.58, 11,787,231.42 and 2,178,384.06 is: 3,267,565.99
Step by Step Solution
- Step 1: Write the proportion equation
7,858,178.58 : 11,787,231.42 = 2,178,384.06 : x - Step 2: Convert to fraction form
7,858,178.58/11,787,231.42 = 2,178,384.06/x - Step 3: Cross multiply
7,858,178.58x = 11,787,231.42 × 2,178,384.06 - Step 4: Simplify right side
7,858,178.58x = 25,677,117,036,859.16 - Step 5: Solve for x
x = 25,677,117,036,859.16/7,858,178.58 - Step 6: Final answer
x = 3,267,565.99
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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.