Finding the Fourth Proportional to 721,106.64, 995,039.64 and 398,772.84
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Solution
The fourth proportional to 721,106.64, 995,039.64 and 398,772.84 is: 550,258.12
Step by Step Solution
- Step 1: Write the proportion equation
721,106.64 : 995,039.64 = 398,772.84 : x - Step 2: Convert to fraction form
721,106.64/995,039.64 = 398,772.84/x - Step 3: Cross multiply
721,106.64x = 995,039.64 × 398,772.84 - Step 4: Simplify right side
721,106.64x = 396,794,783,155.38 - Step 5: Solve for x
x = 396,794,783,155.38/721,106.64 - Step 6: Final answer
x = 550,258.12
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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.