Finding the Fourth Proportional to 717,924.70, 990,733.92 and 395,634.70
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Solution
The fourth proportional to 717,924.70, 990,733.92 and 395,634.70 is: 545,974.69
Step by Step Solution
- Step 1: Write the proportion equation
717,924.70 : 990,733.92 = 395,634.70 : x - Step 2: Convert to fraction form
717,924.70/990,733.92 = 395,634.70/x - Step 3: Cross multiply
717,924.70x = 990,733.92 × 395,634.70 - Step 4: Simplify right side
717,924.70x = 391,968,717,219.02 - Step 5: Solve for x
x = 391,968,717,219.02/717,924.70 - Step 6: Final answer
x = 545,974.69
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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.