Finding the Fourth Proportional to 764,441.28, 1,054,929.65 and 420,283.08
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Solution
The fourth proportional to 764,441.28, 1,054,929.65 and 420,283.08 is: 579,991.02
Step by Step Solution
- Step 1: Write the proportion equation
764,441.28 : 1,054,929.65 = 420,283.08 : x - Step 2: Convert to fraction form
764,441.28/1,054,929.65 = 420,283.08/x - Step 3: Cross multiply
764,441.28x = 1,054,929.65 × 420,283.08 - Step 4: Simplify right side
764,441.28x = 443,369,080,383.91 - Step 5: Solve for x
x = 443,369,080,383.91/764,441.28 - Step 6: Final answer
x = 579,991.02
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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.