Finding the Fourth Proportional to 777,801.75, 1,073,367.14 and 420,105.75
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Solution
The fourth proportional to 777,801.75, 1,073,367.14 and 420,105.75 is: 579,746.32
Step by Step Solution
- Step 1: Write the proportion equation
777,801.75 : 1,073,367.14 = 420,105.75 : x - Step 2: Convert to fraction form
777,801.75/1,073,367.14 = 420,105.75/x - Step 3: Cross multiply
777,801.75x = 1,073,367.14 × 420,105.75 - Step 4: Simplify right side
777,801.75x = 450,927,705,274.53 - Step 5: Solve for x
x = 450,927,705,274.53/777,801.75 - Step 6: Final answer
x = 579,746.32
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1.5x scale
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.