Finding the Fourth Proportional to 612,090.81, 844,806.24 and 391,186.80
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Solution
The fourth proportional to 612,090.81, 844,806.24 and 391,186.80 is: 539,915.07
Step by Step Solution
- Step 1: Write the proportion equation
612,090.81 : 844,806.24 = 391,186.80 : x - Step 2: Convert to fraction form
612,090.81/844,806.24 = 391,186.80/x - Step 3: Cross multiply
612,090.81x = 844,806.24 × 391,186.80 - Step 4: Simplify right side
612,090.81x = 330,477,049,645.63 - Step 5: Solve for x
x = 330,477,049,645.63/612,090.81 - Step 6: Final answer
x = 539,915.07
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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.