Finding the Fourth Proportional to 717,632.41, 990,328.12 and 395,335.03
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Solution
The fourth proportional to 717,632.41, 990,328.12 and 395,335.03 is: 545,559.80
Step by Step Solution
- Step 1: Write the proportion equation
717,632.41 : 990,328.12 = 395,335.03 : x - Step 2: Convert to fraction form
717,632.41/990,328.12 = 395,335.03/x - Step 3: Cross multiply
717,632.41x = 990,328.12 × 395,335.03 - Step 4: Simplify right side
717,632.41x = 391,511,397,030.04 - Step 5: Solve for x
x = 391,511,397,030.04/717,632.41 - Step 6: Final answer
x = 545,559.80
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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.