Finding the Fourth Proportional to 3,418,780.77, 4,717,600.79 and 1,890,855.09
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Solution
The fourth proportional to 3,418,780.77, 4,717,600.79 and 1,890,855.09 is: 2,609,204.88
Step by Step Solution
- Step 1: Write the proportion equation
3,418,780.77 : 4,717,600.79 = 1,890,855.09 : x - Step 2: Convert to fraction form
3,418,780.77/4,717,600.79 = 1,890,855.09/x - Step 3: Cross multiply
3,418,780.77x = 4,717,600.79 × 1,890,855.09 - Step 4: Simplify right side
3,418,780.77x = 8,920,299,456,905.25 - Step 5: Solve for x
x = 8,920,299,456,905.25/3,418,780.77 - Step 6: Final answer
x = 2,609,204.88
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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.