Finding the Fourth Proportional to 1,276,736.64, 1,915,385.10 and 378,248.64
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Solution
The fourth proportional to 1,276,736.64, 1,915,385.10 and 378,248.64 is: 567,455.95
Step by Step Solution
- Step 1: Write the proportion equation
1,276,736.64 : 1,915,385.10 = 378,248.64 : x - Step 2: Convert to fraction form
1,276,736.64/1,915,385.10 = 378,248.64/x - Step 3: Cross multiply
1,276,736.64x = 1,915,385.10 × 378,248.64 - Step 4: Simplify right side
1,276,736.64x = 724,491,809,151.26 - Step 5: Solve for x
x = 724,491,809,151.26/1,276,736.64 - Step 6: Final answer
x = 567,455.95
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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.