Finding the Fourth Proportional to 717,833.05, 990,653.82 and 395,543.09
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Solution
The fourth proportional to 717,833.05, 990,653.82 and 395,543.09 is: 545,873.83
Step by Step Solution
- Step 1: Write the proportion equation
717,833.05 : 990,653.82 = 395,543.09 : x - Step 2: Convert to fraction form
717,833.05/990,653.82 = 395,543.09/x - Step 3: Cross multiply
717,833.05x = 990,653.82 × 395,543.09 - Step 4: Simplify right side
717,833.05x = 391,846,273,083.10 - Step 5: Solve for x
x = 391,846,273,083.10/717,833.05 - Step 6: Final answer
x = 545,873.83
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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.