Finding the Fourth Proportional to 667,217,163.29, 920,767,175.21 and 381,146,575.43
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Solution
The fourth proportional to 667,217,163.29, 920,767,175.21 and 381,146,575.43 is: 525,986,552.68
Step by Step Solution
- Step 1: Write the proportion equation
667,217,163.29 : 920,767,175.21 = 381,146,575.43 : x - Step 2: Convert to fraction form
667,217,163.29/920,767,175.21 = 381,146,575.43/x - Step 3: Cross multiply
667,217,163.29x = 920,767,175.21 × 381,146,575.43 - Step 4: Simplify right side
667,217,163.29x = 350,947,255,602,901,056 - Step 5: Solve for x
x = 350,947,255,602,901,056/667,217,163.29 - Step 6: Final answer
x = 525,986,552.68
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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.