Finding the Fourth Proportional to 5,420,572.16, 8,129,193.60 and 3,748,421.12
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Solution
The fourth proportional to 5,420,572.16, 8,129,193.60 and 3,748,421.12 is: 5,621,480.55
Step by Step Solution
- Step 1: Write the proportion equation
5,420,572.16 : 8,129,193.60 = 3,748,421.12 : x - Step 2: Convert to fraction form
5,420,572.16/8,129,193.60 = 3,748,421.12/x - Step 3: Cross multiply
5,420,572.16x = 8,129,193.60 × 3,748,421.12 - Step 4: Simplify right side
5,420,572.16x = 30,471,640,978,808.83 - Step 5: Solve for x
x = 30,471,640,978,808.83/5,420,572.16 - Step 6: Final answer
x = 5,621,480.55
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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.