Finding the Fourth Proportional to 3,919,493.17, 5,408,717.79 and 2,177,275.48
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Solution
The fourth proportional to 3,919,493.17, 5,408,717.79 and 2,177,275.48 is: 3,004,538.62
Step by Step Solution
- Step 1: Write the proportion equation
3,919,493.17 : 5,408,717.79 = 2,177,275.48 : x - Step 2: Convert to fraction form
3,919,493.17/5,408,717.79 = 2,177,275.48/x - Step 3: Cross multiply
3,919,493.17x = 5,408,717.79 × 2,177,275.48 - Step 4: Simplify right side
3,919,493.17x = 11,776,268,617,049.78 - Step 5: Solve for x
x = 11,776,268,617,049.78/3,919,493.17 - Step 6: Final answer
x = 3,004,538.62
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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.