Finding the Fourth Proportional to 1,918,728,901.80, 2,878,093,352.70 and 1,608,792,510.60
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Solution
The fourth proportional to 1,918,728,901.80, 2,878,093,352.70 and 1,608,792,510.60 is: 2,413,188,765.90
Step by Step Solution
- Step 1: Write the proportion equation
1,918,728,901.80 : 2,878,093,352.70 = 1,608,792,510.60 : x - Step 2: Convert to fraction form
1,918,728,901.80/2,878,093,352.70 = 1,608,792,510.60/x - Step 3: Cross multiply
1,918,728,901.80x = 2,878,093,352.70 × 1,608,792,510.60 - Step 4: Simplify right side
1,918,728,901.80x = 4,630,255,030,631,403,520 - Step 5: Solve for x
x = 4,630,255,030,631,403,520/1,918,728,901.80 - Step 6: Final answer
x = 2,413,188,765.90
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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.