Finding the Fourth Proportional to 2,910,331,531.20, 4,365,534,621.60 and 971,634,763.20
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Solution
The fourth proportional to 2,910,331,531.20, 4,365,534,621.60 and 971,634,763.20 is: 1,457,464,605.95
Step by Step Solution
- Step 1: Write the proportion equation
2,910,331,531.20 : 4,365,534,621.60 = 971,634,763.20 : x - Step 2: Convert to fraction form
2,910,331,531.20/4,365,534,621.60 = 971,634,763.20/x - Step 3: Cross multiply
2,910,331,531.20x = 4,365,534,621.60 × 971,634,763.20 - Step 4: Simplify right side
2,910,331,531.20x = 4,241,705,198,299,718,144 - Step 5: Solve for x
x = 4,241,705,198,299,718,144/2,910,331,531.20 - Step 6: Final answer
x = 1,457,464,605.95
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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.