Finding the Fourth Proportional to 769,639.76, 1,062,106.80 and 430,113.68
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Solution
The fourth proportional to 769,639.76, 1,062,106.80 and 430,113.68 is: 593,559.08
Step by Step Solution
- Step 1: Write the proportion equation
769,639.76 : 1,062,106.80 = 430,113.68 : x - Step 2: Convert to fraction form
769,639.76/1,062,106.80 = 430,113.68/x - Step 3: Cross multiply
769,639.76x = 1,062,106.80 × 430,113.68 - Step 4: Simplify right side
769,639.76x = 456,826,664,301.02 - Step 5: Solve for x
x = 456,826,664,301.02/769,639.76 - Step 6: Final answer
x = 593,559.08
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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.