Finding the Fourth Proportional to 3,129,845,425.80, 4,694,768,138.70 and 1,678,657,201.80
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Solution
The fourth proportional to 3,129,845,425.80, 4,694,768,138.70 and 1,678,657,201.80 is: 2,517,985,802.70
Step by Step Solution
- Step 1: Write the proportion equation
3,129,845,425.80 : 4,694,768,138.70 = 1,678,657,201.80 : x - Step 2: Convert to fraction form
3,129,845,425.80/4,694,768,138.70 = 1,678,657,201.80/x - Step 3: Cross multiply
3,129,845,425.80x = 4,694,768,138.70 × 1,678,657,201.80 - Step 4: Simplify right side
3,129,845,425.80x = 7,880,906,346,809,935,872 - Step 5: Solve for x
x = 7,880,906,346,809,935,872/3,129,845,425.80 - Step 6: Final answer
x = 2,517,985,802.70
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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.