Finding the Fourth Proportional to 919,490.64, 1,378,791.72 and 320,437.68
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Solution
The fourth proportional to 919,490.64, 1,378,791.72 and 320,437.68 is: 480,501.70
Step by Step Solution
- Step 1: Write the proportion equation
919,490.64 : 1,378,791.72 = 320,437.68 : x - Step 2: Convert to fraction form
919,490.64/1,378,791.72 = 320,437.68/x - Step 3: Cross multiply
919,490.64x = 1,378,791.72 × 320,437.68 - Step 4: Simplify right side
919,490.64x = 441,816,819,960.01 - Step 5: Solve for x
x = 441,816,819,960.01/919,490.64 - Step 6: Final answer
x = 480,501.70
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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.