Finding the Fourth Proportional to 777,408.24, 1,072,456.80 and 454,920.54
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Solution
The fourth proportional to 777,408.24, 1,072,456.80 and 454,920.54 is: 627,575.84
Step by Step Solution
- Step 1: Write the proportion equation
777,408.24 : 1,072,456.80 = 454,920.54 : x - Step 2: Convert to fraction form
777,408.24/1,072,456.80 = 454,920.54/x - Step 3: Cross multiply
777,408.24x = 1,072,456.80 × 454,920.54 - Step 4: Simplify right side
777,408.24x = 487,882,626,582.67 - Step 5: Solve for x
x = 487,882,626,582.67/777,408.24 - Step 6: Final answer
x = 627,575.84
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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.