Finding the Fourth Proportional to 717,898.94, 990,707.19 and 395,620.60
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Solution
The fourth proportional to 717,898.94, 990,707.19 and 395,620.60 is: 545,960.09
Step by Step Solution
- Step 1: Write the proportion equation
717,898.94 : 990,707.19 = 395,620.60 : x - Step 2: Convert to fraction form
717,898.94/990,707.19 = 395,620.60/x - Step 3: Cross multiply
717,898.94x = 990,707.19 × 395,620.60 - Step 4: Simplify right side
717,898.94x = 391,944,172,932.11 - Step 5: Solve for x
x = 391,944,172,932.11/717,898.94 - Step 6: Final answer
x = 545,960.09
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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.