Finding the Fourth Proportional to 644,243.88, 889,068.54 and 357,790.62
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Solution
The fourth proportional to 644,243.88, 889,068.54 and 357,790.62 is: 493,757.71
Step by Step Solution
- Step 1: Write the proportion equation
644,243.88 : 889,068.54 = 357,790.62 : x - Step 2: Convert to fraction form
644,243.88/889,068.54 = 357,790.62/x - Step 3: Cross multiply
644,243.88x = 889,068.54 × 357,790.62 - Step 4: Simplify right side
644,243.88x = 318,100,384,149.10 - Step 5: Solve for x
x = 318,100,384,149.10/644,243.88 - Step 6: Final answer
x = 493,757.71
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.