Finding the Fourth Proportional to 5,120,857.51, 7,680,243.60 and 1,881,281.74
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Solution
The fourth proportional to 5,120,857.51, 7,680,243.60 and 1,881,281.74 is: 2,821,539.56
Step by Step Solution
- Step 1: Write the proportion equation
5,120,857.51 : 7,680,243.60 = 1,881,281.74 : x - Step 2: Convert to fraction form
5,120,857.51/7,680,243.60 = 1,881,281.74/x - Step 3: Cross multiply
5,120,857.51x = 7,680,243.60 × 1,881,281.74 - Step 4: Simplify right side
5,120,857.51x = 14,448,702,043,431.86 - Step 5: Solve for x
x = 14,448,702,043,431.86/5,120,857.51 - Step 6: Final answer
x = 2,821,539.56
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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.