Finding the Fourth Proportional to 456,640.60, 686,273.10 and 398,903.80
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Solution
The fourth proportional to 456,640.60, 686,273.10 and 398,903.80 is: 599,501.99
Step by Step Solution
- Step 1: Write the proportion equation
456,640.60 : 686,273.10 = 398,903.80 : x - Step 2: Convert to fraction form
456,640.60/686,273.10 = 398,903.80/x - Step 3: Cross multiply
456,640.60x = 686,273.10 × 398,903.80 - Step 4: Simplify right side
456,640.60x = 273,756,947,427.78 - Step 5: Solve for x
x = 273,756,947,427.78/456,640.60 - Step 6: Final answer
x = 599,501.99
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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.