Finding the Fourth Proportional to 818,943,951.60, 1,228,415,927.40 and 266,245,311.60
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Solution
The fourth proportional to 818,943,951.60, 1,228,415,927.40 and 266,245,311.60 is: 399,367,967.40
Step by Step Solution
- Step 1: Write the proportion equation
818,943,951.60 : 1,228,415,927.40 = 266,245,311.60 : x - Step 2: Convert to fraction form
818,943,951.60/1,228,415,927.40 = 266,245,311.60/x - Step 3: Cross multiply
818,943,951.60x = 1,228,415,927.40 × 266,245,311.60 - Step 4: Simplify right side
818,943,951.60x = 327,059,981,365,016,000 - Step 5: Solve for x
x = 327,059,981,365,016,000/818,943,951.60 - Step 6: Final answer
x = 399,367,967.40
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Double scale
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Similar ratio
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1.5x scale
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.