Finding the Fourth Proportional to 877,839.36, 1,211,403.72 and 490,663.84
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Solution
The fourth proportional to 877,839.36, 1,211,403.72 and 490,663.84 is: 677,107.94
Step by Step Solution
- Step 1: Write the proportion equation
877,839.36 : 1,211,403.72 = 490,663.84 : x - Step 2: Convert to fraction form
877,839.36/1,211,403.72 = 490,663.84/x - Step 3: Cross multiply
877,839.36x = 1,211,403.72 × 490,663.84 - Step 4: Simplify right side
877,839.36x = 594,392,001,045.49 - Step 5: Solve for x
x = 594,392,001,045.49/877,839.36 - Step 6: Final answer
x = 677,107.94
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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.