Finding the Fourth Proportional to 747,813.80, 1,121,720.70 and 304,581.80
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Solution
The fourth proportional to 747,813.80, 1,121,720.70 and 304,581.80 is: 456,872.70
Step by Step Solution
- Step 1: Write the proportion equation
747,813.80 : 1,121,720.70 = 304,581.80 : x - Step 2: Convert to fraction form
747,813.80/1,121,720.70 = 304,581.80/x - Step 3: Cross multiply
747,813.80x = 1,121,720.70 × 304,581.80 - Step 4: Simplify right side
747,813.80x = 341,655,709,903.26 - Step 5: Solve for x
x = 341,655,709,903.26/747,813.80 - Step 6: Final answer
x = 456,872.70
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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.