Finding the Fourth Proportional to 789,718,874.40, 1,184,578,311.60 and 560,136,362.40
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Solution
The fourth proportional to 789,718,874.40, 1,184,578,311.60 and 560,136,362.40 is: 840,204,543.60
Step by Step Solution
- Step 1: Write the proportion equation
789,718,874.40 : 1,184,578,311.60 = 560,136,362.40 : x - Step 2: Convert to fraction form
789,718,874.40/1,184,578,311.60 = 560,136,362.40/x - Step 3: Cross multiply
789,718,874.40x = 1,184,578,311.60 × 560,136,362.40 - Step 4: Simplify right side
789,718,874.40x = 663,525,386,437,557,632 - Step 5: Solve for x
x = 663,525,386,437,557,632/789,718,874.40 - Step 6: Final answer
x = 840,204,543.60
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Double scale
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Similar ratio
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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.