Finding the Fourth Proportional to 1,420,155.25, 2,130,233.18 and 355,197.42
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Solution
The fourth proportional to 1,420,155.25, 2,130,233.18 and 355,197.42 is: 532,796.21
Step by Step Solution
- Step 1: Write the proportion equation
1,420,155.25 : 2,130,233.18 = 355,197.42 : x - Step 2: Convert to fraction form
1,420,155.25/2,130,233.18 = 355,197.42/x - Step 3: Cross multiply
1,420,155.25x = 2,130,233.18 × 355,197.42 - Step 4: Simplify right side
1,420,155.25x = 756,653,327,758.41 - Step 5: Solve for x
x = 756,653,327,758.41/1,420,155.25 - Step 6: Final answer
x = 532,796.21
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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.