Finding the Fourth Proportional to 919,328,686.40, 1,378,993,029.60 and 804,537,430.40
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Solution
The fourth proportional to 919,328,686.40, 1,378,993,029.60 and 804,537,430.40 is: 1,206,806,145.60
Step by Step Solution
- Step 1: Write the proportion equation
919,328,686.40 : 1,378,993,029.60 = 804,537,430.40 : x - Step 2: Convert to fraction form
919,328,686.40/1,378,993,029.60 = 804,537,430.40/x - Step 3: Cross multiply
919,328,686.40x = 1,378,993,029.60 × 804,537,430.40 - Step 4: Simplify right side
919,328,686.40x = 1,109,451,508,573,895,040 - Step 5: Solve for x
x = 1,109,451,508,573,895,040/919,328,686.40 - Step 6: Final answer
x = 1,206,806,145.60
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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.