Finding the Fourth Proportional to 390,334.67, 585,503.84 and 120,459.49
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Solution
The fourth proportional to 390,334.67, 585,503.84 and 120,459.49 is: 180,689.80
Step by Step Solution
- Step 1: Write the proportion equation
390,334.67 : 585,503.84 = 120,459.49 : x - Step 2: Convert to fraction form
390,334.67/585,503.84 = 120,459.49/x - Step 3: Cross multiply
390,334.67x = 585,503.84 × 120,459.49 - Step 4: Simplify right side
390,334.67x = 70,529,493,959.44 - Step 5: Solve for x
x = 70,529,493,959.44/390,334.67 - Step 6: Final answer
x = 180,689.80
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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.