Finding the Fourth Proportional to 8,529,640.40, 12,775,798.20 and 5,157,966.80
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Solution
The fourth proportional to 8,529,640.40, 12,775,798.20 and 5,157,966.80 is: 7,725,664.84
Step by Step Solution
- Step 1: Write the proportion equation
8,529,640.40 : 12,775,798.20 = 5,157,966.80 : x - Step 2: Convert to fraction form
8,529,640.40/12,775,798.20 = 5,157,966.80/x - Step 3: Cross multiply
8,529,640.40x = 12,775,798.20 × 5,157,966.80 - Step 4: Simplify right side
8,529,640.40x = 65,897,142,959,099.75 - Step 5: Solve for x
x = 65,897,142,959,099.75/8,529,640.40 - Step 6: Final answer
x = 7,725,664.84
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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.