Finding the Fourth Proportional to 858,446.91, 1,287,940.98 and 538,821.09
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Solution
The fourth proportional to 858,446.91, 1,287,940.98 and 538,821.09 is: 808,401.49
Step by Step Solution
- Step 1: Write the proportion equation
858,446.91 : 1,287,940.98 = 538,821.09 : x - Step 2: Convert to fraction form
858,446.91/1,287,940.98 = 538,821.09/x - Step 3: Cross multiply
858,446.91x = 1,287,940.98 × 538,821.09 - Step 4: Simplify right side
858,446.91x = 693,969,762,699.27 - Step 5: Solve for x
x = 693,969,762,699.27/858,446.91 - Step 6: Final answer
x = 808,401.49
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.