Finding the Fourth Proportional to 538,137,538.62, 742,629,774.87 and 290,618,869.02
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Solution
The fourth proportional to 538,137,538.62, 742,629,774.87 and 290,618,869.02 is: 401,054,023.90
Step by Step Solution
- Step 1: Write the proportion equation
538,137,538.62 : 742,629,774.87 = 290,618,869.02 : x - Step 2: Convert to fraction form
538,137,538.62/742,629,774.87 = 290,618,869.02/x - Step 3: Cross multiply
538,137,538.62x = 742,629,774.87 × 290,618,869.02 - Step 4: Simplify right side
538,137,538.62x = 215,822,225,273,296,608 - Step 5: Solve for x
x = 215,822,225,273,296,608/538,137,538.62 - Step 6: Final answer
x = 401,054,023.90
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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.