Finding the Fourth Proportional to 1,274,474,428.80, 1,911,711,643.20 and 930,100,660.80
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Solution
The fourth proportional to 1,274,474,428.80, 1,911,711,643.20 and 930,100,660.80 is: 1,395,150,991.20
Step by Step Solution
- Step 1: Write the proportion equation
1,274,474,428.80 : 1,911,711,643.20 = 930,100,660.80 : x - Step 2: Convert to fraction form
1,274,474,428.80/1,911,711,643.20 = 930,100,660.80/x - Step 3: Cross multiply
1,274,474,428.80x = 1,911,711,643.20 × 930,100,660.80 - Step 4: Simplify right side
1,274,474,428.80x = 1,778,084,262,599,373,824 - Step 5: Solve for x
x = 1,778,084,262,599,373,824/1,274,474,428.80 - Step 6: Final answer
x = 1,395,150,991.20
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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.