Finding the Fourth Proportional to 1,315,198,325.28, 1,814,975,876.88 and 720,469,843.68
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Solution
The fourth proportional to 1,315,198,325.28, 1,814,975,876.88 and 720,469,843.68 is: 994,249,582.87
Step by Step Solution
- Step 1: Write the proportion equation
1,315,198,325.28 : 1,814,975,876.88 = 720,469,843.68 : x - Step 2: Convert to fraction form
1,315,198,325.28/1,814,975,876.88 = 720,469,843.68/x - Step 3: Cross multiply
1,315,198,325.28x = 1,814,975,876.88 × 720,469,843.68 - Step 4: Simplify right side
1,315,198,325.28x = 1,307,635,386,298,704,640 - Step 5: Solve for x
x = 1,307,635,386,298,704,640/1,315,198,325.28 - Step 6: Final answer
x = 994,249,582.87
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.