Finding the Fourth Proportional to 5,120,419.68, 7,680,601.60 and 2,087,773.76
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Solution
The fourth proportional to 5,120,419.68, 7,680,601.60 and 2,087,773.76 is: 3,131,649.26
Step by Step Solution
- Step 1: Write the proportion equation
5,120,419.68 : 7,680,601.60 = 2,087,773.76 : x - Step 2: Convert to fraction form
5,120,419.68/7,680,601.60 = 2,087,773.76/x - Step 3: Cross multiply
5,120,419.68x = 7,680,601.60 × 2,087,773.76 - Step 4: Simplify right side
5,120,419.68x = 16,035,358,481,494.02 - Step 5: Solve for x
x = 16,035,358,481,494.02/5,120,419.68 - Step 6: Final answer
x = 3,131,649.26
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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.