Finding the Fourth Proportional to 3,638,821.51, 5,458,885.87 and 1,242,105.63
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Solution
The fourth proportional to 3,638,821.51, 5,458,885.87 and 1,242,105.63 is: 1,863,381.55
Step by Step Solution
- Step 1: Write the proportion equation
3,638,821.51 : 5,458,885.87 = 1,242,105.63 : x - Step 2: Convert to fraction form
3,638,821.51/5,458,885.87 = 1,242,105.63/x - Step 3: Cross multiply
3,638,821.51x = 5,458,885.87 × 1,242,105.63 - Step 4: Simplify right side
3,638,821.51x = 6,780,512,872,654.45 - Step 5: Solve for x
x = 6,780,512,872,654.45/3,638,821.51 - Step 6: Final answer
x = 1,863,381.55
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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.