Finding the Fourth Proportional to 991,156.40, 1,486,791.12 and 281,128.64
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Solution
The fourth proportional to 991,156.40, 1,486,791.12 and 281,128.64 is: 421,708.99
Step by Step Solution
- Step 1: Write the proportion equation
991,156.40 : 1,486,791.12 = 281,128.64 : x - Step 2: Convert to fraction form
991,156.40/1,486,791.12 = 281,128.64/x - Step 3: Cross multiply
991,156.40x = 1,486,791.12 × 281,128.64 - Step 4: Simplify right side
991,156.40x = 417,979,565,529.68 - Step 5: Solve for x
x = 417,979,565,529.68/991,156.40 - Step 6: Final answer
x = 421,708.99
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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.