Finding the Fourth Proportional to 717,204.75, 989,742.60 and 399,252.75
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Solution
The fourth proportional to 717,204.75, 989,742.60 and 399,252.75 is: 550,968.82
Step by Step Solution
- Step 1: Write the proportion equation
717,204.75 : 989,742.60 = 399,252.75 : x - Step 2: Convert to fraction form
717,204.75/989,742.60 = 399,252.75/x - Step 3: Cross multiply
717,204.75x = 989,742.60 × 399,252.75 - Step 4: Simplify right side
717,204.75x = 395,157,454,842.15 - Step 5: Solve for x
x = 395,157,454,842.15/717,204.75 - Step 6: Final answer
x = 550,968.82
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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.