Finding the Fourth Proportional to 4,480,459.60, 6,719,911.80 and 1,639,109.20
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Solution
The fourth proportional to 4,480,459.60, 6,719,911.80 and 1,639,109.20 is: 2,458,379.33
Step by Step Solution
- Step 1: Write the proportion equation
4,480,459.60 : 6,719,911.80 = 1,639,109.20 : x - Step 2: Convert to fraction form
4,480,459.60/6,719,911.80 = 1,639,109.20/x - Step 3: Cross multiply
4,480,459.60x = 6,719,911.80 × 1,639,109.20 - Step 4: Simplify right side
4,480,459.60x = 11,014,669,254,568.56 - Step 5: Solve for x
x = 11,014,669,254,568.56/4,480,459.60 - Step 6: Final answer
x = 2,458,379.33
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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.