Finding the Fourth Proportional to 386,823,194.20, 580,234,791.30 and 364,129,715.80
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Solution
The fourth proportional to 386,823,194.20, 580,234,791.30 and 364,129,715.80 is: 546,194,573.70
Step by Step Solution
- Step 1: Write the proportion equation
386,823,194.20 : 580,234,791.30 = 364,129,715.80 : x - Step 2: Convert to fraction form
386,823,194.20/580,234,791.30 = 364,129,715.80/x - Step 3: Cross multiply
386,823,194.20x = 580,234,791.30 × 364,129,715.80 - Step 4: Simplify right side
386,823,194.20x = 211,280,729,653,341,312 - Step 5: Solve for x
x = 211,280,729,653,341,312/386,823,194.20 - Step 6: Final answer
x = 546,194,573.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.