Finding the Fourth Proportional to 522,489.60, 781,660.80 and 453,139.20
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Solution
The fourth proportional to 522,489.60, 781,660.80 and 453,139.20 is: 677,910.43
Step by Step Solution
- Step 1: Write the proportion equation
522,489.60 : 781,660.80 = 453,139.20 : x - Step 2: Convert to fraction form
522,489.60/781,660.80 = 453,139.20/x - Step 3: Cross multiply
522,489.60x = 781,660.80 × 453,139.20 - Step 4: Simplify right side
522,489.60x = 354,201,149,583.36 - Step 5: Solve for x
x = 354,201,149,583.36/522,489.60 - Step 6: Final answer
x = 677,910.43
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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.