Finding the Fourth Proportional to 438,604.20, 656,448.30 and 318,319.20
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Solution
The fourth proportional to 438,604.20, 656,448.30 and 318,319.20 is: 476,420.65
Step by Step Solution
- Step 1: Write the proportion equation
438,604.20 : 656,448.30 = 318,319.20 : x - Step 2: Convert to fraction form
438,604.20/656,448.30 = 318,319.20/x - Step 3: Cross multiply
438,604.20x = 656,448.30 × 318,319.20 - Step 4: Simplify right side
438,604.20x = 208,960,097,697.36 - Step 5: Solve for x
x = 208,960,097,697.36/438,604.20 - Step 6: Final answer
x = 476,420.65
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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.