Finding the Fourth Proportional to 748,721.68, 1,122,239.21 and 368,837.55
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Solution
The fourth proportional to 748,721.68, 1,122,239.21 and 368,837.55 is: 552,840.89
Step by Step Solution
- Step 1: Write the proportion equation
748,721.68 : 1,122,239.21 = 368,837.55 : x - Step 2: Convert to fraction form
748,721.68/1,122,239.21 = 368,837.55/x - Step 3: Cross multiply
748,721.68x = 1,122,239.21 × 368,837.55 - Step 4: Simplify right side
748,721.68x = 413,923,958,886.15 - Step 5: Solve for x
x = 413,923,958,886.15/748,721.68 - Step 6: Final answer
x = 552,840.89
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.