Finding the Fourth Proportional to 764,408.79, 1,054,895.93 and 420,259.63
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Solution
The fourth proportional to 764,408.79, 1,054,895.93 and 420,259.63 is: 579,964.78
Step by Step Solution
- Step 1: Write the proportion equation
764,408.79 : 1,054,895.93 = 420,259.63 : x - Step 2: Convert to fraction form
764,408.79/1,054,895.93 = 420,259.63/x - Step 3: Cross multiply
764,408.79x = 1,054,895.93 × 420,259.63 - Step 4: Simplify right side
764,408.79x = 443,330,173,230.31 - Step 5: Solve for x
x = 443,330,173,230.31/764,408.79 - Step 6: Final answer
x = 579,964.78
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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.