Finding the Fourth Proportional to 1,392,840.09, 2,089,727.51 and 539,939.55
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Solution
The fourth proportional to 1,392,840.09, 2,089,727.51 and 539,939.55 is: 810,090.51
Step by Step Solution
- Step 1: Write the proportion equation
1,392,840.09 : 2,089,727.51 = 539,939.55 : x - Step 2: Convert to fraction form
1,392,840.09/2,089,727.51 = 539,939.55/x - Step 3: Cross multiply
1,392,840.09x = 2,089,727.51 × 539,939.55 - Step 4: Simplify right side
1,392,840.09x = 1,128,326,536,508.80 - Step 5: Solve for x
x = 1,128,326,536,508.80/1,392,840.09 - Step 6: Final answer
x = 810,090.51
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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.