Finding the Fourth Proportional to 1,427,400.80, 1,969,810.08 and 823,788.80
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Solution
The fourth proportional to 1,427,400.80, 1,969,810.08 and 823,788.80 is: 1,136,826.80
Step by Step Solution
- Step 1: Write the proportion equation
1,427,400.80 : 1,969,810.08 = 823,788.80 : x - Step 2: Convert to fraction form
1,427,400.80/1,969,810.08 = 823,788.80/x - Step 3: Cross multiply
1,427,400.80x = 1,969,810.08 × 823,788.80 - Step 4: Simplify right side
1,427,400.80x = 1,622,707,482,031.10 - Step 5: Solve for x
x = 1,622,707,482,031.10/1,427,400.80 - Step 6: Final answer
x = 1,136,826.80
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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.