Finding the Fourth Proportional to 1,026,431.80, 1,539,647.70 and 921,455.80
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Solution
The fourth proportional to 1,026,431.80, 1,539,647.70 and 921,455.80 is: 1,382,183.70
Step by Step Solution
- Step 1: Write the proportion equation
1,026,431.80 : 1,539,647.70 = 921,455.80 : x - Step 2: Convert to fraction form
1,026,431.80/1,539,647.70 = 921,455.80/x - Step 3: Cross multiply
1,026,431.80x = 1,539,647.70 × 921,455.80 - Step 4: Simplify right side
1,026,431.80x = 1,418,717,303,121.66 - Step 5: Solve for x
x = 1,418,717,303,121.66/1,026,431.80 - Step 6: Final answer
x = 1,382,183.70
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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.