Finding the Fourth Proportional to 7,457,431.20, 11,158,153.20 and 4,938,007.20
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Solution
The fourth proportional to 7,457,431.20, 11,158,153.20 and 4,938,007.20 is: 7,388,474.58
Step by Step Solution
- Step 1: Write the proportion equation
7,457,431.20 : 11,158,153.20 = 4,938,007.20 : x - Step 2: Convert to fraction form
7,457,431.20/11,158,153.20 = 4,938,007.20/x - Step 3: Cross multiply
7,457,431.20x = 11,158,153.20 × 4,938,007.20 - Step 4: Simplify right side
7,457,431.20x = 55,099,040,840,303.04 - Step 5: Solve for x
x = 55,099,040,840,303.04/7,457,431.20 - Step 6: Final answer
x = 7,388,474.58
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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.