Finding the Fourth Proportional to 12,478,316.80, 18,701,728.80 and 6,074,780.80
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Solution
The fourth proportional to 12,478,316.80, 18,701,728.80 and 6,074,780.80 is: 9,104,505.43
Step by Step Solution
- Step 1: Write the proportion equation
12,478,316.80 : 18,701,728.80 = 6,074,780.80 : x - Step 2: Convert to fraction form
12,478,316.80/18,701,728.80 = 6,074,780.80/x - Step 3: Cross multiply
12,478,316.80x = 18,701,728.80 × 6,074,780.80 - Step 4: Simplify right side
12,478,316.80x = 113,608,903,041,047.05 - Step 5: Solve for x
x = 113,608,903,041,047.05/12,478,316.80 - Step 6: Final answer
x = 9,104,505.43
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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.