Finding the Fourth Proportional to 1,173,042,948.93, 1,618,800,330.51 and 644,441,177.94
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Solution
The fourth proportional to 1,173,042,948.93, 1,618,800,330.51 and 644,441,177.94 is: 889,329,408.44
Step by Step Solution
- Step 1: Write the proportion equation
1,173,042,948.93 : 1,618,800,330.51 = 644,441,177.94 : x - Step 2: Convert to fraction form
1,173,042,948.93/1,618,800,330.51 = 644,441,177.94/x - Step 3: Cross multiply
1,173,042,948.93x = 1,618,800,330.51 × 644,441,177.94 - Step 4: Simplify right side
1,173,042,948.93x = 1,043,221,591,843,525,760 - Step 5: Solve for x
x = 1,043,221,591,843,525,760/1,173,042,948.93 - Step 6: Final answer
x = 889,329,408.44
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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.