Finding the Fourth Proportional to 5,162,991.50, 7,125,062.70 and 2,839,943.90
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Solution
The fourth proportional to 5,162,991.50, 7,125,062.70 and 2,839,943.90 is: 3,919,196.53
Step by Step Solution
- Step 1: Write the proportion equation
5,162,991.50 : 7,125,062.70 = 2,839,943.90 : x - Step 2: Convert to fraction form
5,162,991.50/7,125,062.70 = 2,839,943.90/x - Step 3: Cross multiply
5,162,991.50x = 7,125,062.70 × 2,839,943.90 - Step 4: Simplify right side
5,162,991.50x = 20,234,778,380,444.98 - Step 5: Solve for x
x = 20,234,778,380,444.98/5,162,991.50 - Step 6: Final answer
x = 3,919,196.53
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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.