Finding the Fourth Proportional to 1,222,272.37, 1,686,599.07 and 678,431.08
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Solution
The fourth proportional to 1,222,272.37, 1,686,599.07 and 678,431.08 is: 936,158.96
Step by Step Solution
- Step 1: Write the proportion equation
1,222,272.37 : 1,686,599.07 = 678,431.08 : x - Step 2: Convert to fraction form
1,222,272.37/1,686,599.07 = 678,431.08/x - Step 3: Cross multiply
1,222,272.37x = 1,686,599.07 × 678,431.08 - Step 4: Simplify right side
1,222,272.37x = 1,144,241,228,587.10 - Step 5: Solve for x
x = 1,144,241,228,587.10/1,222,272.37 - Step 6: Final answer
x = 936,158.96
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1.5x scale
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.