Finding the Fourth Proportional to 420,396,453.36, 580,135,865.58 and 232,220,697.24
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Solution
The fourth proportional to 420,396,453.36, 580,135,865.58 and 232,220,697.24 is: 320,458,353.35
Step by Step Solution
- Step 1: Write the proportion equation
420,396,453.36 : 580,135,865.58 = 232,220,697.24 : x - Step 2: Convert to fraction form
420,396,453.36/580,135,865.58 = 232,220,697.24/x - Step 3: Cross multiply
420,396,453.36x = 580,135,865.58 × 232,220,697.24 - Step 4: Simplify right side
420,396,453.36x = 134,719,555,198,918,528 - Step 5: Solve for x
x = 134,719,555,198,918,528/420,396,453.36 - Step 6: Final answer
x = 320,458,353.35
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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.