Finding the Fourth Proportional to 572,067.76, 789,453.68 and 317,420.80
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Solution
The fourth proportional to 572,067.76, 789,453.68 and 317,420.80 is: 438,040.80
Step by Step Solution
- Step 1: Write the proportion equation
572,067.76 : 789,453.68 = 317,420.80 : x - Step 2: Convert to fraction form
572,067.76/789,453.68 = 317,420.80/x - Step 3: Cross multiply
572,067.76x = 789,453.68 × 317,420.80 - Step 4: Simplify right side
572,067.76x = 250,589,018,668.54 - Step 5: Solve for x
x = 250,589,018,668.54/572,067.76 - Step 6: Final answer
x = 438,040.80
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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.