Finding the Fourth Proportional to 1,276,512,812.40, 1,914,769,218.60 and 499,900,364.40
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Solution
The fourth proportional to 1,276,512,812.40, 1,914,769,218.60 and 499,900,364.40 is: 749,850,546.60
Step by Step Solution
- Step 1: Write the proportion equation
1,276,512,812.40 : 1,914,769,218.60 = 499,900,364.40 : x - Step 2: Convert to fraction form
1,276,512,812.40/1,914,769,218.60 = 499,900,364.40/x - Step 3: Cross multiply
1,276,512,812.40x = 1,914,769,218.60 × 499,900,364.40 - Step 4: Simplify right side
1,276,512,812.40x = 957,193,830,120,043,136 - Step 5: Solve for x
x = 957,193,830,120,043,136/1,276,512,812.40 - Step 6: Final answer
x = 749,850,546.60
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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.