Finding the Fourth Proportional to 644,335.26, 889,130.59 and 372,420.75
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Solution
The fourth proportional to 644,335.26, 889,130.59 and 372,420.75 is: 513,910.54
Step by Step Solution
- Step 1: Write the proportion equation
644,335.26 : 889,130.59 = 372,420.75 : x - Step 2: Convert to fraction form
644,335.26/889,130.59 = 372,420.75/x - Step 3: Cross multiply
644,335.26x = 889,130.59 × 372,420.75 - Step 4: Simplify right side
644,335.26x = 331,130,681,175.74 - Step 5: Solve for x
x = 331,130,681,175.74/644,335.26 - Step 6: Final answer
x = 513,910.54
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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.