Finding the Fourth Proportional to 3,899,497.60, 5,381,205.99 and 2,157,121.59
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Solution
The fourth proportional to 3,899,497.60, 5,381,205.99 and 2,157,121.59 is: 2,976,772.09
Step by Step Solution
- Step 1: Write the proportion equation
3,899,497.60 : 5,381,205.99 = 2,157,121.59 : x - Step 2: Convert to fraction form
3,899,497.60/5,381,205.99 = 2,157,121.59/x - Step 3: Cross multiply
3,899,497.60x = 5,381,205.99 × 2,157,121.59 - Step 4: Simplify right side
3,899,497.60x = 11,607,915,621,266.32 - Step 5: Solve for x
x = 11,607,915,621,266.32/3,899,497.60 - Step 6: Final answer
x = 2,976,772.09
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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.