Finding the Fourth Proportional to 3,128,553.68, 4,315,173.68 and 2,871,259.92
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Solution
The fourth proportional to 3,128,553.68, 4,315,173.68 and 2,871,259.92 is: 3,960,291.72
Step by Step Solution
- Step 1: Write the proportion equation
3,128,553.68 : 4,315,173.68 = 2,871,259.92 : x - Step 2: Convert to fraction form
3,128,553.68/4,315,173.68 = 2,871,259.92/x - Step 3: Cross multiply
3,128,553.68x = 4,315,173.68 × 2,871,259.92 - Step 4: Simplify right side
3,128,553.68x = 12,389,985,235,222.90 - Step 5: Solve for x
x = 12,389,985,235,222.90/3,128,553.68 - Step 6: Final answer
x = 3,960,291.72
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.