Finding the Fourth Proportional to 879,765.60, 1,320,311.84 and 643,717.28
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Solution
The fourth proportional to 879,765.60, 1,320,311.84 and 643,717.28 is: 966,061.35
Step by Step Solution
- Step 1: Write the proportion equation
879,765.60 : 1,320,311.84 = 643,717.28 : x - Step 2: Convert to fraction form
879,765.60/1,320,311.84 = 643,717.28/x - Step 3: Cross multiply
879,765.60x = 1,320,311.84 × 643,717.28 - Step 4: Simplify right side
879,765.60x = 849,907,546,396.60 - Step 5: Solve for x
x = 849,907,546,396.60/879,765.60 - Step 6: Final answer
x = 966,061.35
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.