Finding the Fourth Proportional to 717,897.30, 990,704.96 and 395,618.96
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Solution
The fourth proportional to 717,897.30, 990,704.96 and 395,618.96 is: 545,957.84
Step by Step Solution
- Step 1: Write the proportion equation
717,897.30 : 990,704.96 = 395,618.96 : x - Step 2: Convert to fraction form
717,897.30/990,704.96 = 395,618.96/x - Step 3: Cross multiply
717,897.30x = 990,704.96 × 395,618.96 - Step 4: Simplify right side
717,897.30x = 391,941,659,010.42 - Step 5: Solve for x
x = 391,941,659,010.42/717,897.30 - Step 6: Final answer
x = 545,957.84
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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.