Finding the Fourth Proportional to 1,420,156.25, 2,130,234.68 and 355,198.42
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Solution
The fourth proportional to 1,420,156.25, 2,130,234.68 and 355,198.42 is: 532,797.71
Step by Step Solution
- Step 1: Write the proportion equation
1,420,156.25 : 2,130,234.68 = 355,198.42 : x - Step 2: Convert to fraction form
1,420,156.25/2,130,234.68 = 355,198.42/x - Step 3: Cross multiply
1,420,156.25x = 2,130,234.68 × 355,198.42 - Step 4: Simplify right side
1,420,156.25x = 756,655,992,565.21 - Step 5: Solve for x
x = 756,655,992,565.21/1,420,156.25 - Step 6: Final answer
x = 532,797.71
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1.5x scale
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.