Finding the Fourth Proportional to 720,220.58, 993,877.56 and 397,923.78
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Solution
The fourth proportional to 720,220.58, 993,877.56 and 397,923.78 is: 549,119.99
Step by Step Solution
- Step 1: Write the proportion equation
720,220.58 : 993,877.56 = 397,923.78 : x - Step 2: Convert to fraction form
720,220.58/993,877.56 = 397,923.78/x - Step 3: Cross multiply
720,220.58x = 993,877.56 × 397,923.78 - Step 4: Simplify right side
720,220.58x = 395,487,515,532.38 - Step 5: Solve for x
x = 395,487,515,532.38/720,220.58 - Step 6: Final answer
x = 549,119.99
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1.5x scale
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.