Finding the Fourth Proportional to 548,645.70, 822,968.55 and 478,661.70
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Solution
The fourth proportional to 548,645.70, 822,968.55 and 478,661.70 is: 717,992.55
Step by Step Solution
- Step 1: Write the proportion equation
548,645.70 : 822,968.55 = 478,661.70 : x - Step 2: Convert to fraction form
548,645.70/822,968.55 = 478,661.70/x - Step 3: Cross multiply
548,645.70x = 822,968.55 × 478,661.70 - Step 4: Simplify right side
548,645.70x = 393,923,525,189.54 - Step 5: Solve for x
x = 393,923,525,189.54/548,645.70 - Step 6: Final answer
x = 717,992.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.