Finding the Fourth Proportional to 715,720.37, 987,706.37 and 393,444.05
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Solution
The fourth proportional to 715,720.37, 987,706.37 and 393,444.05 is: 542,959.53
Step by Step Solution
- Step 1: Write the proportion equation
715,720.37 : 987,706.37 = 393,444.05 : x - Step 2: Convert to fraction form
715,720.37/987,706.37 = 393,444.05/x - Step 3: Cross multiply
715,720.37x = 987,706.37 × 393,444.05 - Step 4: Simplify right side
715,720.37x = 388,607,190,468.68 - Step 5: Solve for x
x = 388,607,190,468.68/715,720.37 - Step 6: Final answer
x = 542,959.53
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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.