Finding the Fourth Proportional to 1,420,435.62, 1,960,113.87 and 775,725.03
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Solution
The fourth proportional to 1,420,435.62, 1,960,113.87 and 775,725.03 is: 1,070,452.87
Step by Step Solution
- Step 1: Write the proportion equation
1,420,435.62 : 1,960,113.87 = 775,725.03 : x - Step 2: Convert to fraction form
1,420,435.62/1,960,113.87 = 775,725.03/x - Step 3: Cross multiply
1,420,435.62x = 1,960,113.87 × 775,725.03 - Step 4: Simplify right side
1,420,435.62x = 1,520,509,390,609.17 - Step 5: Solve for x
x = 1,520,509,390,609.17/1,420,435.62 - Step 6: Final answer
x = 1,070,452.87
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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.