Finding the Fourth Proportional to 2,117,492,147.20, 3,176,238,220.80 and 643,629,107.20
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Solution
The fourth proportional to 2,117,492,147.20, 3,176,238,220.80 and 643,629,107.20 is: 965,443,660.80
Step by Step Solution
- Step 1: Write the proportion equation
2,117,492,147.20 : 3,176,238,220.80 = 643,629,107.20 : x - Step 2: Convert to fraction form
2,117,492,147.20/3,176,238,220.80 = 643,629,107.20/x - Step 3: Cross multiply
2,117,492,147.20x = 3,176,238,220.80 × 643,629,107.20 - Step 4: Simplify right side
2,117,492,147.20x = 2,044,319,370,308,020,736 - Step 5: Solve for x
x = 2,044,319,370,308,020,736/2,117,492,147.20 - Step 6: Final answer
x = 965,443,660.80
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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.