Finding the Fourth Proportional to 1,887,298,021.98, 2,831,637,348.81 and 878,211,912.24
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Solution
The fourth proportional to 1,887,298,021.98, 2,831,637,348.81 and 878,211,912.24 is: 1,317,639,091.39
Step by Step Solution
- Step 1: Write the proportion equation
1,887,298,021.98 : 2,831,637,348.81 = 878,211,912.24 : x - Step 2: Convert to fraction form
1,887,298,021.98/2,831,637,348.81 = 878,211,912.24/x - Step 3: Cross multiply
1,887,298,021.98x = 2,831,637,348.81 × 878,211,912.24 - Step 4: Simplify right side
1,887,298,021.98x = 2,486,777,650,868,634,112 - Step 5: Solve for x
x = 2,486,777,650,868,634,112/1,887,298,021.98 - Step 6: Final answer
x = 1,317,639,091.39
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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.