Finding the Fourth Proportional to 560,668.40, 774,734.49 and 399,243.20
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Solution
The fourth proportional to 560,668.40, 774,734.49 and 399,243.20 is: 551,676.32
Step by Step Solution
- Step 1: Write the proportion equation
560,668.40 : 774,734.49 = 399,243.20 : x - Step 2: Convert to fraction form
560,668.40/774,734.49 = 399,243.20/x - Step 3: Cross multiply
560,668.40x = 774,734.49 × 399,243.20 - Step 4: Simplify right side
560,668.40x = 309,307,476,937.97 - Step 5: Solve for x
x = 309,307,476,937.97/560,668.40 - Step 6: Final answer
x = 551,676.32
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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.