Finding the Fourth Proportional to 3,854,121.30, 5,318,477.88 and 2,135,139.30
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Solution
The fourth proportional to 3,854,121.30, 5,318,477.88 and 2,135,139.30 is: 2,946,376.17
Step by Step Solution
- Step 1: Write the proportion equation
3,854,121.30 : 5,318,477.88 = 2,135,139.30 : x - Step 2: Convert to fraction form
3,854,121.30/5,318,477.88 = 2,135,139.30/x - Step 3: Cross multiply
3,854,121.30x = 5,318,477.88 × 2,135,139.30 - Step 4: Simplify right side
3,854,121.30x = 11,355,691,137,768.68 - Step 5: Solve for x
x = 11,355,691,137,768.68/3,854,121.30 - Step 6: Final answer
x = 2,946,376.17
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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.