Finding the Fourth Proportional to 809,400.80, 1,214,101.20 and 388,575.20
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Solution
The fourth proportional to 809,400.80, 1,214,101.20 and 388,575.20 is: 582,862.80
Step by Step Solution
- Step 1: Write the proportion equation
809,400.80 : 1,214,101.20 = 388,575.20 : x - Step 2: Convert to fraction form
809,400.80/1,214,101.20 = 388,575.20/x - Step 3: Cross multiply
809,400.80x = 1,214,101.20 × 388,575.20 - Step 4: Simplify right side
809,400.80x = 471,769,616,610.24 - Step 5: Solve for x
x = 471,769,616,610.24/809,400.80 - Step 6: Final answer
x = 582,862.80
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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.