Finding the Fourth Proportional to 485,821.13, 670,434.18 and 270,955.67
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Solution
The fourth proportional to 485,821.13, 670,434.18 and 270,955.67 is: 373,919.39
Step by Step Solution
- Step 1: Write the proportion equation
485,821.13 : 670,434.18 = 270,955.67 : x - Step 2: Convert to fraction form
485,821.13/670,434.18 = 270,955.67/x - Step 3: Cross multiply
485,821.13x = 670,434.18 × 270,955.67 - Step 4: Simplify right side
485,821.13x = 181,657,942,432.80 - Step 5: Solve for x
x = 181,657,942,432.80/485,821.13 - Step 6: Final answer
x = 373,919.39
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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.