Finding the Fourth Proportional to 804,815,999.20, 1,207,223,998.80 and 782,141,183.20
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Solution
The fourth proportional to 804,815,999.20, 1,207,223,998.80 and 782,141,183.20 is: 1,173,211,774.80
Step by Step Solution
- Step 1: Write the proportion equation
804,815,999.20 : 1,207,223,998.80 = 782,141,183.20 : x - Step 2: Convert to fraction form
804,815,999.20/1,207,223,998.80 = 782,141,183.20/x - Step 3: Cross multiply
804,815,999.20x = 1,207,223,998.80 × 782,141,183.20 - Step 4: Simplify right side
804,815,999.20x = 944,219,606,808,867,456 - Step 5: Solve for x
x = 944,219,606,808,867,456/804,815,999.20 - Step 6: Final answer
x = 1,173,211,774.80
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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.