Finding the Fourth Proportional to 644,430.98, 889,431.18 and 372,461.24
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Solution
The fourth proportional to 644,430.98, 889,431.18 and 372,461.24 is: 514,063.80
Step by Step Solution
- Step 1: Write the proportion equation
644,430.98 : 889,431.18 = 372,461.24 : x - Step 2: Convert to fraction form
644,430.98/889,431.18 = 372,461.24/x - Step 3: Cross multiply
644,430.98x = 889,431.18 × 372,461.24 - Step 4: Simplify right side
644,430.98x = 331,278,640,197.46 - Step 5: Solve for x
x = 331,278,640,197.46/644,430.98 - Step 6: Final answer
x = 514,063.80
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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.