Finding the Fourth Proportional to 418,720.93, 628,339.74 and 194,039.49
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Solution
The fourth proportional to 418,720.93, 628,339.74 and 194,039.49 is: 291,178.95
Step by Step Solution
- Step 1: Write the proportion equation
418,720.93 : 628,339.74 = 194,039.49 : x - Step 2: Convert to fraction form
418,720.93/628,339.74 = 194,039.49/x - Step 3: Cross multiply
418,720.93x = 628,339.74 × 194,039.49 - Step 4: Simplify right side
418,720.93x = 121,922,722,696.33 - Step 5: Solve for x
x = 121,922,722,696.33/418,720.93 - Step 6: Final answer
x = 291,178.95
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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.