Finding the Fourth Proportional to 491,493,271.80, 737,239,907.70 and 127,987,627.80
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Solution
The fourth proportional to 491,493,271.80, 737,239,907.70 and 127,987,627.80 is: 191,981,441.70
Step by Step Solution
- Step 1: Write the proportion equation
491,493,271.80 : 737,239,907.70 = 127,987,627.80 : x - Step 2: Convert to fraction form
491,493,271.80/737,239,907.70 = 127,987,627.80/x - Step 3: Cross multiply
491,493,271.80x = 737,239,907.70 × 127,987,627.80 - Step 4: Simplify right side
491,493,271.80x = 94,357,586,906,013,952 - Step 5: Solve for x
x = 94,357,586,906,013,952/491,493,271.80 - Step 6: Final answer
x = 191,981,441.70
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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.