Finding the Fourth Proportional to 391,448.54, 540,007.02 and 339,692.99
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Solution
The fourth proportional to 391,448.54, 540,007.02 and 339,692.99 is: 468,609.75
Step by Step Solution
- Step 1: Write the proportion equation
391,448.54 : 540,007.02 = 339,692.99 : x - Step 2: Convert to fraction form
391,448.54/540,007.02 = 339,692.99/x - Step 3: Cross multiply
391,448.54x = 540,007.02 × 339,692.99 - Step 4: Simplify right side
391,448.54x = 183,436,600,742.79 - Step 5: Solve for x
x = 183,436,600,742.79/391,448.54 - Step 6: Final answer
x = 468,609.75
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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.