Finding the Fourth Proportional to 7,212,950.87, 9,953,871.98 and 3,949,965.09
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Solution
The fourth proportional to 7,212,950.87, 9,953,871.98 and 3,949,965.09 is: 5,450,951.70
Step by Step Solution
- Step 1: Write the proportion equation
7,212,950.87 : 9,953,871.98 = 3,949,965.09 : x - Step 2: Convert to fraction form
7,212,950.87/9,953,871.98 = 3,949,965.09/x - Step 3: Cross multiply
7,212,950.87x = 9,953,871.98 × 3,949,965.09 - Step 4: Simplify right side
7,212,950.87x = 39,317,446,811,579.35 - Step 5: Solve for x
x = 39,317,446,811,579.35/7,212,950.87 - Step 6: Final answer
x = 5,450,951.70
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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.