Finding the Fourth Proportional to 764,427.60, 1,054,922.72 and 420,278.08
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Solution
The fourth proportional to 764,427.60, 1,054,922.72 and 420,278.08 is: 579,990.70
Step by Step Solution
- Step 1: Write the proportion equation
764,427.60 : 1,054,922.72 = 420,278.08 : x - Step 2: Convert to fraction form
764,427.60/1,054,922.72 = 420,278.08/x - Step 3: Cross multiply
764,427.60x = 1,054,922.72 × 420,278.08 - Step 4: Simplify right side
764,427.60x = 443,360,895,309.98 - Step 5: Solve for x
x = 443,360,895,309.98/764,427.60 - Step 6: Final answer
x = 579,990.70
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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.