Finding the Fourth Proportional to 437,516.80, 656,534.40 and 318,889.60
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Solution
The fourth proportional to 437,516.80, 656,534.40 and 318,889.60 is: 478,523.32
Step by Step Solution
- Step 1: Write the proportion equation
437,516.80 : 656,534.40 = 318,889.60 : x - Step 2: Convert to fraction form
437,516.80/656,534.40 = 318,889.60/x - Step 3: Cross multiply
437,516.80x = 656,534.40 × 318,889.60 - Step 4: Simplify right side
437,516.80x = 209,361,992,202.24 - Step 5: Solve for x
x = 209,361,992,202.24/437,516.80 - Step 6: Final answer
x = 478,523.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.