Finding the Fourth Proportional to 5,160,906.84, 7,121,772.54 and 2,868,904.92
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Solution
The fourth proportional to 5,160,906.84, 7,121,772.54 and 2,868,904.92 is: 3,958,933.75
Step by Step Solution
- Step 1: Write the proportion equation
5,160,906.84 : 7,121,772.54 = 2,868,904.92 : x - Step 2: Convert to fraction form
5,160,906.84/7,121,772.54 = 2,868,904.92/x - Step 3: Cross multiply
5,160,906.84x = 7,121,772.54 × 2,868,904.92 - Step 4: Simplify right side
5,160,906.84x = 20,431,688,279,126.89 - Step 5: Solve for x
x = 20,431,688,279,126.89/5,160,906.84 - Step 6: Final answer
x = 3,958,933.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.