Finding the Fourth Proportional to 743,151.99, 1,025,515.45 and 420,864.40
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Solution
The fourth proportional to 743,151.99, 1,025,515.45 and 420,864.40 is: 580,773.45
Step by Step Solution
- Step 1: Write the proportion equation
743,151.99 : 1,025,515.45 = 420,864.40 : x - Step 2: Convert to fraction form
743,151.99/1,025,515.45 = 420,864.40/x - Step 3: Cross multiply
743,151.99x = 1,025,515.45 × 420,864.40 - Step 4: Simplify right side
743,151.99x = 431,602,944,554.98 - Step 5: Solve for x
x = 431,602,944,554.98/743,151.99 - Step 6: Final answer
x = 580,773.45
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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.