Finding the Fourth Proportional to 1,264,279.11, 1,744,368.78 and 720,403.31
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Solution
The fourth proportional to 1,264,279.11, 1,744,368.78 and 720,403.31 is: 993,964.89
Step by Step Solution
- Step 1: Write the proportion equation
1,264,279.11 : 1,744,368.78 = 720,403.31 : x - Step 2: Convert to fraction form
1,264,279.11/1,744,368.78 = 720,403.31/x - Step 3: Cross multiply
1,264,279.11x = 1,744,368.78 × 720,403.31 - Step 4: Simplify right side
1,264,279.11x = 1,256,649,042,972.66 - Step 5: Solve for x
x = 1,256,649,042,972.66/1,264,279.11 - Step 6: Final answer
x = 993,964.89
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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.