Finding the Fourth Proportional to 912,070,382.97, 1,258,623,408.55 and 494,373,700.20
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Solution
The fourth proportional to 912,070,382.97, 1,258,623,408.55 and 494,373,700.20 is: 682,217,428.90
Step by Step Solution
- Step 1: Write the proportion equation
912,070,382.97 : 1,258,623,408.55 = 494,373,700.20 : x - Step 2: Convert to fraction form
912,070,382.97/1,258,623,408.55 = 494,373,700.20/x - Step 3: Cross multiply
912,070,382.97x = 1,258,623,408.55 × 494,373,700.20 - Step 4: Simplify right side
912,070,382.97x = 622,230,311,643,199,744 - Step 5: Solve for x
x = 622,230,311,643,199,744/912,070,382.97 - Step 6: Final answer
x = 682,217,428.90
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.