Finding the Fourth Proportional to 522,090.40, 783,135.60 and 439,421.80
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Solution
The fourth proportional to 522,090.40, 783,135.60 and 439,421.80 is: 659,132.70
Step by Step Solution
- Step 1: Write the proportion equation
522,090.40 : 783,135.60 = 439,421.80 : x - Step 2: Convert to fraction form
522,090.40/783,135.60 = 439,421.80/x - Step 3: Cross multiply
522,090.40x = 783,135.60 × 439,421.80 - Step 4: Simplify right side
522,090.40x = 344,126,854,996.08 - Step 5: Solve for x
x = 344,126,854,996.08/522,090.40 - Step 6: Final answer
x = 659,132.70
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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.