Finding the Fourth Proportional to 644,391.98, 889,162.09 and 372,407.36
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Solution
The fourth proportional to 644,391.98, 889,162.09 and 372,407.36 is: 513,865.02
Step by Step Solution
- Step 1: Write the proportion equation
644,391.98 : 889,162.09 = 372,407.36 : x - Step 2: Convert to fraction form
644,391.98/889,162.09 = 372,407.36/x - Step 3: Cross multiply
644,391.98x = 889,162.09 × 372,407.36 - Step 4: Simplify right side
644,391.98x = 331,130,501,172.15 - Step 5: Solve for x
x = 331,130,501,172.15/644,391.98 - Step 6: Final answer
x = 513,865.02
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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.