Finding the Fourth Proportional to 7,128,066.80, 10,688,163.60 and 2,863,416.80
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Solution
The fourth proportional to 7,128,066.80, 10,688,163.60 and 2,863,416.80 is: 4,293,543.83
Step by Step Solution
- Step 1: Write the proportion equation
7,128,066.80 : 10,688,163.60 = 2,863,416.80 : x - Step 2: Convert to fraction form
7,128,066.80/10,688,163.60 = 2,863,416.80/x - Step 3: Cross multiply
7,128,066.80x = 10,688,163.60 × 2,863,416.80 - Step 4: Simplify right side
7,128,066.80x = 30,604,667,213,388.48 - Step 5: Solve for x
x = 30,604,667,213,388.48/7,128,066.80 - Step 6: Final answer
x = 4,293,543.83
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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.