Finding the Fourth Proportional to 919,101.92, 1,378,653.36 and 420,116
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Solution
The fourth proportional to 919,101.92, 1,378,653.36 and 420,116 is: 630,174.22
Step by Step Solution
- Step 1: Write the proportion equation
919,101.92 : 1,378,653.36 = 420,116 : x - Step 2: Convert to fraction form
919,101.92/1,378,653.36 = 420,116/x - Step 3: Cross multiply
919,101.92x = 1,378,653.36 × 420,116 - Step 4: Simplify right side
919,101.92x = 579,194,334,989.76 - Step 5: Solve for x
x = 579,194,334,989.76/919,101.92 - Step 6: Final answer
x = 630,174.22
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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.