Finding the Fourth Proportional to 7,129,321.20, 10,699,230.60 and 2,872,544.40
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Solution
The fourth proportional to 7,129,321.20, 10,699,230.60 and 2,872,544.40 is: 4,310,931.45
Step by Step Solution
- Step 1: Write the proportion equation
7,129,321.20 : 10,699,230.60 = 2,872,544.40 : x - Step 2: Convert to fraction form
7,129,321.20/10,699,230.60 = 2,872,544.40/x - Step 3: Cross multiply
7,129,321.20x = 10,699,230.60 × 2,872,544.40 - Step 4: Simplify right side
7,129,321.20x = 30,734,014,944,338.64 - Step 5: Solve for x
x = 30,734,014,944,338.64/7,129,321.20 - Step 6: Final answer
x = 4,310,931.45
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.