Finding the Fourth Proportional to 1,286,629,231.80, 1,929,943,847.70 and 1,072,352,220.60
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Solution
The fourth proportional to 1,286,629,231.80, 1,929,943,847.70 and 1,072,352,220.60 is: 1,608,528,330.90
Step by Step Solution
- Step 1: Write the proportion equation
1,286,629,231.80 : 1,929,943,847.70 = 1,072,352,220.60 : x - Step 2: Convert to fraction form
1,286,629,231.80/1,929,943,847.70 = 1,072,352,220.60/x - Step 3: Cross multiply
1,286,629,231.80x = 1,929,943,847.70 × 1,072,352,220.60 - Step 4: Simplify right side
1,286,629,231.80x = 2,069,579,570,714,403,328 - Step 5: Solve for x
x = 2,069,579,570,714,403,328/1,286,629,231.80 - Step 6: Final answer
x = 1,608,528,330.90
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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.