Finding the Fourth Proportional to 3,936,742.40, 5,905,113.60 and 1,412,652.80
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Solution
The fourth proportional to 3,936,742.40, 5,905,113.60 and 1,412,652.80 is: 2,118,979.20
Step by Step Solution
- Step 1: Write the proportion equation
3,936,742.40 : 5,905,113.60 = 1,412,652.80 : x - Step 2: Convert to fraction form
3,936,742.40/5,905,113.60 = 1,412,652.80/x - Step 3: Cross multiply
3,936,742.40x = 5,905,113.60 × 1,412,652.80 - Step 4: Simplify right side
3,936,742.40x = 8,341,875,261,358.08 - Step 5: Solve for x
x = 8,341,875,261,358.08/3,936,742.40 - Step 6: Final answer
x = 2,118,979.20
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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.