Finding the Fourth Proportional to 720,328.19, 1,080,679.10 and 383,091.53
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Solution
The fourth proportional to 720,328.19, 1,080,679.10 and 383,091.53 is: 574,736.65
Step by Step Solution
- Step 1: Write the proportion equation
720,328.19 : 1,080,679.10 = 383,091.53 : x - Step 2: Convert to fraction form
720,328.19/1,080,679.10 = 383,091.53/x - Step 3: Cross multiply
720,328.19x = 1,080,679.10 × 383,091.53 - Step 4: Simplify right side
720,328.19x = 413,999,010,644.26 - Step 5: Solve for x
x = 413,999,010,644.26/720,328.19 - Step 6: Final answer
x = 574,736.65
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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.