Finding the Fourth Proportional to 3,890,493.12, 5,368,493.70 and 2,148,049.47
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Solution
The fourth proportional to 3,890,493.12, 5,368,493.70 and 2,148,049.47 is: 2,964,094.70
Step by Step Solution
- Step 1: Write the proportion equation
3,890,493.12 : 5,368,493.70 = 2,148,049.47 : x - Step 2: Convert to fraction form
3,890,493.12/5,368,493.70 = 2,148,049.47/x - Step 3: Cross multiply
3,890,493.12x = 5,368,493.70 × 2,148,049.47 - Step 4: Simplify right side
3,890,493.12x = 11,531,790,046,983.34 - Step 5: Solve for x
x = 11,531,790,046,983.34/3,890,493.12 - Step 6: Final answer
x = 2,964,094.70
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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.