Finding the Fourth Proportional to 717,632.91, 990,328.82 and 395,335.53
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Solution
The fourth proportional to 717,632.91, 990,328.82 and 395,335.53 is: 545,560.50
Step by Step Solution
- Step 1: Write the proportion equation
717,632.91 : 990,328.82 = 395,335.53 : x - Step 2: Convert to fraction form
717,632.91/990,328.82 = 395,335.53/x - Step 3: Cross multiply
717,632.91x = 990,328.82 × 395,335.53 - Step 4: Simplify right side
717,632.91x = 391,512,166,952.30 - Step 5: Solve for x
x = 391,512,166,952.30/717,632.91 - Step 6: Final answer
x = 545,560.50
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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.