Finding the Fourth Proportional to 7,129,928.94, 9,839,234.97 and 3,866,815.68
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Solution
The fourth proportional to 7,129,928.94, 9,839,234.97 and 3,866,815.68 is: 5,336,169.32
Step by Step Solution
- Step 1: Write the proportion equation
7,129,928.94 : 9,839,234.97 = 3,866,815.68 : x - Step 2: Convert to fraction form
7,129,928.94/9,839,234.97 = 3,866,815.68/x - Step 3: Cross multiply
7,129,928.94x = 9,839,234.97 × 3,866,815.68 - Step 4: Simplify right side
7,129,928.94x = 38,046,508,061,200.34 - Step 5: Solve for x
x = 38,046,508,061,200.34/7,129,928.94 - Step 6: Final answer
x = 5,336,169.32
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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.