Finding the Fourth Proportional to 485,476.12, 670,244.09 and 431,612.06
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Solution
The fourth proportional to 485,476.12, 670,244.09 and 431,612.06 is: 595,879.84
Step by Step Solution
- Step 1: Write the proportion equation
485,476.12 : 670,244.09 = 431,612.06 : x - Step 2: Convert to fraction form
485,476.12/670,244.09 = 431,612.06/x - Step 3: Cross multiply
485,476.12x = 670,244.09 × 431,612.06 - Step 4: Simplify right side
485,476.12x = 289,285,430,229.67 - Step 5: Solve for x
x = 289,285,430,229.67/485,476.12 - Step 6: Final answer
x = 595,879.84
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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.