Finding the Fourth Proportional to 12,456,829.40, 18,685,244.10 and 4,479,459.80
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Solution
The fourth proportional to 12,456,829.40, 18,685,244.10 and 4,479,459.80 is: 6,719,189.70
Step by Step Solution
- Step 1: Write the proportion equation
12,456,829.40 : 18,685,244.10 = 4,479,459.80 : x - Step 2: Convert to fraction form
12,456,829.40/18,685,244.10 = 4,479,459.80/x - Step 3: Cross multiply
12,456,829.40x = 18,685,244.10 × 4,479,459.80 - Step 4: Simplify right side
12,456,829.40x = 83,699,799,799,137.19 - Step 5: Solve for x
x = 83,699,799,799,137.19/12,456,829.40 - Step 6: Final answer
x = 6,719,189.70
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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.