Finding the Fourth Proportional to 804,803.40, 1,207,205.10 and 405,289.80
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Solution
The fourth proportional to 804,803.40, 1,207,205.10 and 405,289.80 is: 607,934.70
Step by Step Solution
- Step 1: Write the proportion equation
804,803.40 : 1,207,205.10 = 405,289.80 : x - Step 2: Convert to fraction form
804,803.40/1,207,205.10 = 405,289.80/x - Step 3: Cross multiply
804,803.40x = 1,207,205.10 × 405,289.80 - Step 4: Simplify right side
804,803.40x = 489,267,913,537.98 - Step 5: Solve for x
x = 489,267,913,537.98/804,803.40 - Step 6: Final answer
x = 607,934.70
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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.