Finding the Fourth Proportional to 1,131,028.11, 1,560,779.28 and 621,726.84
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Solution
The fourth proportional to 1,131,028.11, 1,560,779.28 and 621,726.84 is: 857,961.32
Step by Step Solution
- Step 1: Write the proportion equation
1,131,028.11 : 1,560,779.28 = 621,726.84 : x - Step 2: Convert to fraction form
1,131,028.11/1,560,779.28 = 621,726.84/x - Step 3: Cross multiply
1,131,028.11x = 1,560,779.28 × 621,726.84 - Step 4: Simplify right side
1,131,028.11x = 970,378,369,691.88 - Step 5: Solve for x
x = 970,378,369,691.88/1,131,028.11 - Step 6: Final answer
x = 857,961.32
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1.5x scale
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.