Finding the Fourth Proportional to 3,129,844,510.80, 4,694,766,766.20 and 1,678,656,286.80
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Solution
The fourth proportional to 3,129,844,510.80, 4,694,766,766.20 and 1,678,656,286.80 is: 2,517,984,430.20
Step by Step Solution
- Step 1: Write the proportion equation
3,129,844,510.80 : 4,694,766,766.20 = 1,678,656,286.80 : x - Step 2: Convert to fraction form
3,129,844,510.80/4,694,766,766.20 = 1,678,656,286.80/x - Step 3: Cross multiply
3,129,844,510.80x = 4,694,766,766.20 × 1,678,656,286.80 - Step 4: Simplify right side
3,129,844,510.80x = 7,880,899,747,141,335,040 - Step 5: Solve for x
x = 7,880,899,747,141,335,040/3,129,844,510.80 - Step 6: Final answer
x = 2,517,984,430.20
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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.