Finding the Fourth Proportional to 455,537.20, 683,305.80 and 431,042.80
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Solution
The fourth proportional to 455,537.20, 683,305.80 and 431,042.80 is: 646,564.20
Step by Step Solution
- Step 1: Write the proportion equation
455,537.20 : 683,305.80 = 431,042.80 : x - Step 2: Convert to fraction form
455,537.20/683,305.80 = 431,042.80/x - Step 3: Cross multiply
455,537.20x = 683,305.80 × 431,042.80 - Step 4: Simplify right side
455,537.20x = 294,534,045,288.24 - Step 5: Solve for x
x = 294,534,045,288.24/455,537.20 - Step 6: Final answer
x = 646,564.20
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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.