Finding the Fourth Proportional to 1,280,128,245.80, 1,920,192,368.70 and 1,229,963,714.60
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Solution
The fourth proportional to 1,280,128,245.80, 1,920,192,368.70 and 1,229,963,714.60 is: 1,844,945,571.90
Step by Step Solution
- Step 1: Write the proportion equation
1,280,128,245.80 : 1,920,192,368.70 = 1,229,963,714.60 : x - Step 2: Convert to fraction form
1,280,128,245.80/1,920,192,368.70 = 1,229,963,714.60/x - Step 3: Cross multiply
1,280,128,245.80x = 1,920,192,368.70 × 1,229,963,714.60 - Step 4: Simplify right side
1,280,128,245.80x = 2,361,766,938,552,824,832 - Step 5: Solve for x
x = 2,361,766,938,552,824,832/1,280,128,245.80 - Step 6: Final answer
x = 1,844,945,571.90
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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.