Finding the Fourth Proportional to 5,491,920.12, 7,578,828.78 and 3,077,472.12
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Solution
The fourth proportional to 5,491,920.12, 7,578,828.78 and 3,077,472.12 is: 4,246,899.77
Step by Step Solution
- Step 1: Write the proportion equation
5,491,920.12 : 7,578,828.78 = 3,077,472.12 : x - Step 2: Convert to fraction form
5,491,920.12/7,578,828.78 = 3,077,472.12/x - Step 3: Cross multiply
5,491,920.12x = 7,578,828.78 × 3,077,472.12 - Step 4: Simplify right side
5,491,920.12x = 23,323,634,272,703.62 - Step 5: Solve for x
x = 23,323,634,272,703.62/5,491,920.12 - Step 6: Final answer
x = 4,246,899.77
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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.