Finding the Fourth Proportional to 985,509.71, 1,478,255.82 and 311,591.48
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Solution
The fourth proportional to 985,509.71, 1,478,255.82 and 311,591.48 is: 467,384.45
Step by Step Solution
- Step 1: Write the proportion equation
985,509.71 : 1,478,255.82 = 311,591.48 : x - Step 2: Convert to fraction form
985,509.71/1,478,255.82 = 311,591.48/x - Step 3: Cross multiply
985,509.71x = 1,478,255.82 × 311,591.48 - Step 4: Simplify right side
985,509.71x = 460,611,911,381.13 - Step 5: Solve for x
x = 460,611,911,381.13/985,509.71 - Step 6: Final answer
x = 467,384.45
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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.