Finding the Fourth Proportional to 521,855.70, 782,783.55 and 311,903.70
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Solution
The fourth proportional to 521,855.70, 782,783.55 and 311,903.70 is: 467,855.55
Step by Step Solution
- Step 1: Write the proportion equation
521,855.70 : 782,783.55 = 311,903.70 : x - Step 2: Convert to fraction form
521,855.70/782,783.55 = 311,903.70/x - Step 3: Cross multiply
521,855.70x = 782,783.55 × 311,903.70 - Step 4: Simplify right side
521,855.70x = 244,153,085,544.14 - Step 5: Solve for x
x = 244,153,085,544.14/521,855.70 - Step 6: Final answer
x = 467,855.55
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1.5x scale
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.