Finding the Fourth Proportional to 717,532.91, 990,190.81 and 395,235.53
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Solution
The fourth proportional to 717,532.91, 990,190.81 and 395,235.53 is: 545,422.49
Step by Step Solution
- Step 1: Write the proportion equation
717,532.91 : 990,190.81 = 395,235.53 : x - Step 2: Convert to fraction form
717,532.91/990,190.81 = 395,235.53/x - Step 3: Cross multiply
717,532.91x = 990,190.81 × 395,235.53 - Step 4: Simplify right side
717,532.91x = 391,358,589,591.48 - Step 5: Solve for x
x = 391,358,589,591.48/717,532.91 - Step 6: Final answer
x = 545,422.49
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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.