Finding the Fourth Proportional to 318,629,639.80, 477,944,459.70 and 318,629,639.80
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Solution
The fourth proportional to 318,629,639.80, 477,944,459.70 and 318,629,639.80 is: 477,944,459.70
Step by Step Solution
- Step 1: Write the proportion equation
318,629,639.80 : 477,944,459.70 = 318,629,639.80 : x - Step 2: Convert to fraction form
318,629,639.80/477,944,459.70 = 318,629,639.80/x - Step 3: Cross multiply
318,629,639.80x = 477,944,459.70 × 318,629,639.80 - Step 4: Simplify right side
318,629,639.80x = 152,287,271,038,616,608 - Step 5: Solve for x
x = 152,287,271,038,616,608/318,629,639.80 - Step 6: Final answer
x = 477,944,459.70
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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.