Finding the Fourth Proportional to 667,217,165.91, 920,767,178.84 and 381,146,578.07
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Solution
The fourth proportional to 667,217,165.91, 920,767,178.84 and 381,146,578.07 is: 525,986,556.31
Step by Step Solution
- Step 1: Write the proportion equation
667,217,165.91 : 920,767,178.84 = 381,146,578.07 : x - Step 2: Convert to fraction form
667,217,165.91/920,767,178.84 = 381,146,578.07/x - Step 3: Cross multiply
667,217,165.91x = 920,767,178.84 × 381,146,578.07 - Step 4: Simplify right side
667,217,165.91x = 350,947,259,407,524,160 - Step 5: Solve for x
x = 350,947,259,407,524,160/667,217,165.91 - Step 6: Final answer
x = 525,986,556.31
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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.