Finding the Fourth Proportional to 777,725.80, 1,073,261.36 and 420,029.80
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Solution
The fourth proportional to 777,725.80, 1,073,261.36 and 420,029.80 is: 579,640.99
Step by Step Solution
- Step 1: Write the proportion equation
777,725.80 : 1,073,261.36 = 420,029.80 : x - Step 2: Convert to fraction form
777,725.80/1,073,261.36 = 420,029.80/x - Step 3: Cross multiply
777,725.80x = 1,073,261.36 × 420,029.80 - Step 4: Simplify right side
777,725.80x = 450,801,754,388.53 - Step 5: Solve for x
x = 450,801,754,388.53/777,725.80 - Step 6: Final answer
x = 579,640.99
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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.