Finding the Fourth Proportional to 1,356,441.80, 2,034,986.70 and 409,821.80
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Solution
The fourth proportional to 1,356,441.80, 2,034,986.70 and 409,821.80 is: 614,830.59
Step by Step Solution
- Step 1: Write the proportion equation
1,356,441.80 : 2,034,986.70 = 409,821.80 : x - Step 2: Convert to fraction form
1,356,441.80/2,034,986.70 = 409,821.80/x - Step 3: Cross multiply
1,356,441.80x = 2,034,986.70 × 409,821.80 - Step 4: Simplify right side
1,356,441.80x = 833,981,912,370.06 - Step 5: Solve for x
x = 833,981,912,370.06/1,356,441.80 - Step 6: Final answer
x = 614,830.59
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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.