Finding the Fourth Proportional to 721,528.36, 995,567.58 and 399,178.24
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Solution
The fourth proportional to 721,528.36, 995,567.58 and 399,178.24 is: 550,787.66
Step by Step Solution
- Step 1: Write the proportion equation
721,528.36 : 995,567.58 = 399,178.24 : x - Step 2: Convert to fraction form
721,528.36/995,567.58 = 399,178.24/x - Step 3: Cross multiply
721,528.36x = 995,567.58 × 399,178.24 - Step 4: Simplify right side
721,528.36x = 397,408,914,385.46 - Step 5: Solve for x
x = 397,408,914,385.46/721,528.36 - Step 6: Final answer
x = 550,787.66
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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.