Finding the Fourth Proportional to 919,328,720.90, 1,378,993,081.35 and 804,537,464.90
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Solution
The fourth proportional to 919,328,720.90, 1,378,993,081.35 and 804,537,464.90 is: 1,206,806,197.35
Step by Step Solution
- Step 1: Write the proportion equation
919,328,720.90 : 1,378,993,081.35 = 804,537,464.90 : x - Step 2: Convert to fraction form
919,328,720.90/1,378,993,081.35 = 804,537,464.90/x - Step 3: Cross multiply
919,328,720.90x = 1,378,993,081.35 × 804,537,464.90 - Step 4: Simplify right side
919,328,720.90x = 1,109,451,597,783,968,384 - Step 5: Solve for x
x = 1,109,451,597,783,968,384/919,328,720.90 - Step 6: Final answer
x = 1,206,806,197.35
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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.