Finding the Fourth Proportional to 644,418.56, 889,203.84 and 357,941.12
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Solution
The fourth proportional to 644,418.56, 889,203.84 and 357,941.12 is: 493,906.66
Step by Step Solution
- Step 1: Write the proportion equation
644,418.56 : 889,203.84 = 357,941.12 : x - Step 2: Convert to fraction form
644,418.56/889,203.84 = 357,941.12/x - Step 3: Cross multiply
644,418.56x = 889,203.84 × 357,941.12 - Step 4: Simplify right side
644,418.56x = 318,282,618,397.90 - Step 5: Solve for x
x = 318,282,618,397.90/644,418.56 - Step 6: Final answer
x = 493,906.66
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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.