Finding the Fourth Proportional to 1,121,840.07, 1,548,159.26 and 638,354.31
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Solution
The fourth proportional to 1,121,840.07, 1,548,159.26 and 638,354.31 is: 880,940.30
Step by Step Solution
- Step 1: Write the proportion equation
1,121,840.07 : 1,548,159.26 = 638,354.31 : x - Step 2: Convert to fraction form
1,121,840.07/1,548,159.26 = 638,354.31/x - Step 3: Cross multiply
1,121,840.07x = 1,548,159.26 × 638,354.31 - Step 4: Simplify right side
1,121,840.07x = 988,274,132,995.64 - Step 5: Solve for x
x = 988,274,132,995.64/1,121,840.07 - Step 6: Final answer
x = 880,940.30
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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.