Finding the Fourth Proportional to 1,557,372, 2,149,173.84 and 841,980
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Solution
The fourth proportional to 1,557,372, 2,149,173.84 and 841,980 is: 1,161,932.66
Step by Step Solution
- Step 1: Write the proportion equation
1,557,372 : 2,149,173.84 = 841,980 : x - Step 2: Convert to fraction form
1,557,372/2,149,173.84 = 841,980/x - Step 3: Cross multiply
1,557,372x = 2,149,173.84 × 841,980 - Step 4: Simplify right side
1,557,372x = 1,809,561,389,803.20 - Step 5: Solve for x
x = 1,809,561,389,803.20/1,557,372 - Step 6: Final answer
x = 1,161,932.66
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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.