Finding the Fourth Proportional to 638,296.80, 957,445.20 and 439,231.20
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Solution
The fourth proportional to 638,296.80, 957,445.20 and 439,231.20 is: 658,846.80
Step by Step Solution
- Step 1: Write the proportion equation
638,296.80 : 957,445.20 = 439,231.20 : x - Step 2: Convert to fraction form
638,296.80/957,445.20 = 439,231.20/x - Step 3: Cross multiply
638,296.80x = 957,445.20 × 439,231.20 - Step 4: Simplify right side
638,296.80x = 420,539,804,130.24 - Step 5: Solve for x
x = 420,539,804,130.24/638,296.80 - Step 6: Final answer
x = 658,846.80
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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.