Finding the Fourth Proportional to 747,713.20, 1,121,569.80 and 431,801.05
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Solution
The fourth proportional to 747,713.20, 1,121,569.80 and 431,801.05 is: 647,701.58
Step by Step Solution
- Step 1: Write the proportion equation
747,713.20 : 1,121,569.80 = 431,801.05 : x - Step 2: Convert to fraction form
747,713.20/1,121,569.80 = 431,801.05/x - Step 3: Cross multiply
747,713.20x = 1,121,569.80 × 431,801.05 - Step 4: Simplify right side
747,713.20x = 484,295,017,288.29 - Step 5: Solve for x
x = 484,295,017,288.29/747,713.20 - Step 6: Final answer
x = 647,701.58
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1.5x scale
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.