Finding the Fourth Proportional to 6,642,845.70, 9,964,268.55 and 2,155,121.70
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Solution
The fourth proportional to 6,642,845.70, 9,964,268.55 and 2,155,121.70 is: 3,232,682.55
Step by Step Solution
- Step 1: Write the proportion equation
6,642,845.70 : 9,964,268.55 = 2,155,121.70 : x - Step 2: Convert to fraction form
6,642,845.70/9,964,268.55 = 2,155,121.70/x - Step 3: Cross multiply
6,642,845.70x = 9,964,268.55 × 2,155,121.70 - Step 4: Simplify right side
6,642,845.70x = 21,474,211,376,732.54 - Step 5: Solve for x
x = 21,474,211,376,732.54/6,642,845.70 - Step 6: Final answer
x = 3,232,682.55
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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.