Finding the Fourth Proportional to 1,423,961.75, 2,136,292.55 and 426,689.75
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Solution
The fourth proportional to 1,423,961.75, 2,136,292.55 and 426,689.75 is: 640,139.48
Step by Step Solution
- Step 1: Write the proportion equation
1,423,961.75 : 2,136,292.55 = 426,689.75 : x - Step 2: Convert to fraction form
1,423,961.75/2,136,292.55 = 426,689.75/x - Step 3: Cross multiply
1,423,961.75x = 2,136,292.55 × 426,689.75 - Step 4: Simplify right side
1,423,961.75x = 911,534,134,086.36 - Step 5: Solve for x
x = 911,534,134,086.36/1,423,961.75 - Step 6: Final answer
x = 640,139.48
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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.