Finding the Fourth Proportional to 3,985,823.60, 5,979,610.20 and 1,965,035.60
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Solution
The fourth proportional to 3,985,823.60, 5,979,610.20 and 1,965,035.60 is: 2,947,984.68
Step by Step Solution
- Step 1: Write the proportion equation
3,985,823.60 : 5,979,610.20 = 1,965,035.60 : x - Step 2: Convert to fraction form
3,985,823.60/5,979,610.20 = 1,965,035.60/x - Step 3: Cross multiply
3,985,823.60x = 5,979,610.20 × 1,965,035.60 - Step 4: Simplify right side
3,985,823.60x = 11,750,146,917,123.12 - Step 5: Solve for x
x = 11,750,146,917,123.12/3,985,823.60 - Step 6: Final answer
x = 2,947,984.68
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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.