Finding the Fourth Proportional to 874,447.21, 1,206,720.95 and 476,629.05
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Solution
The fourth proportional to 874,447.21, 1,206,720.95 and 476,629.05 is: 657,739.26
Step by Step Solution
- Step 1: Write the proportion equation
874,447.21 : 1,206,720.95 = 476,629.05 : x - Step 2: Convert to fraction form
874,447.21/1,206,720.95 = 476,629.05/x - Step 3: Cross multiply
874,447.21x = 1,206,720.95 × 476,629.05 - Step 4: Simplify right side
874,447.21x = 575,158,260,013.60 - Step 5: Solve for x
x = 575,158,260,013.60/874,447.21 - Step 6: Final answer
x = 657,739.26
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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.