Finding the Fourth Proportional to 878,374,861.54, 1,317,780,363.47 and 435,925,193.18
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Solution
The fourth proportional to 878,374,861.54, 1,317,780,363.47 and 435,925,193.18 is: 653,996,015.44
Step by Step Solution
- Step 1: Write the proportion equation
878,374,861.54 : 1,317,780,363.47 = 435,925,193.18 : x - Step 2: Convert to fraction form
878,374,861.54/1,317,780,363.47 = 435,925,193.18/x - Step 3: Cross multiply
878,374,861.54x = 1,317,780,363.47 × 435,925,193.18 - Step 4: Simplify right side
878,374,861.54x = 574,453,659,505,701,824 - Step 5: Solve for x
x = 574,453,659,505,701,824/878,374,861.54 - Step 6: Final answer
x = 653,996,015.44
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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.