Finding the Fourth Proportional to 3,420,816.76, 5,130,395.70 and 1,425,184.12
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Solution
The fourth proportional to 3,420,816.76, 5,130,395.70 and 1,425,184.12 is: 2,137,430.62
Step by Step Solution
- Step 1: Write the proportion equation
3,420,816.76 : 5,130,395.70 = 1,425,184.12 : x - Step 2: Convert to fraction form
3,420,816.76/5,130,395.70 = 1,425,184.12/x - Step 3: Cross multiply
3,420,816.76x = 5,130,395.70 × 1,425,184.12 - Step 4: Simplify right side
3,420,816.76x = 7,311,758,480,956.29 - Step 5: Solve for x
x = 7,311,758,480,956.29/3,420,816.76 - Step 6: Final answer
x = 2,137,430.62
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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.