Finding the Fourth Proportional to 717,832.80, 990,653.48 and 395,542.84
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Solution
The fourth proportional to 717,832.80, 990,653.48 and 395,542.84 is: 545,873.48
Step by Step Solution
- Step 1: Write the proportion equation
717,832.80 : 990,653.48 = 395,542.84 : x - Step 2: Convert to fraction form
717,832.80/990,653.48 = 395,542.84/x - Step 3: Cross multiply
717,832.80x = 990,653.48 × 395,542.84 - Step 4: Simplify right side
717,832.80x = 391,845,890,935.08 - Step 5: Solve for x
x = 391,845,890,935.08/717,832.80 - Step 6: Final answer
x = 545,873.48
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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.