Finding the Fourth Proportional to 1,391,714.23, 1,920,533.10 and 818,791.28
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Solution
The fourth proportional to 1,391,714.23, 1,920,533.10 and 818,791.28 is: 1,129,912.82
Step by Step Solution
- Step 1: Write the proportion equation
1,391,714.23 : 1,920,533.10 = 818,791.28 : x - Step 2: Convert to fraction form
1,391,714.23/1,920,533.10 = 818,791.28/x - Step 3: Cross multiply
1,391,714.23x = 1,920,533.10 × 818,791.28 - Step 4: Simplify right side
1,391,714.23x = 1,572,515,755,231.37 - Step 5: Solve for x
x = 1,572,515,755,231.37/1,391,714.23 - Step 6: Final answer
x = 1,129,912.82
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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.