Finding the Fourth Proportional to 644,431.62, 889,563.64 and 429,493.26
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Solution
The fourth proportional to 644,431.62, 889,563.64 and 429,493.26 is: 592,865.99
Step by Step Solution
- Step 1: Write the proportion equation
644,431.62 : 889,563.64 = 429,493.26 : x - Step 2: Convert to fraction form
644,431.62/889,563.64 = 429,493.26/x - Step 3: Cross multiply
644,431.62x = 889,563.64 × 429,493.26 - Step 4: Simplify right side
644,431.62x = 382,061,587,721.07 - Step 5: Solve for x
x = 382,061,587,721.07/644,431.62 - Step 6: Final answer
x = 592,865.99
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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.