Finding the Fourth Proportional to 2,676,889,424.40, 4,015,334,136.60 and 836,639,149.20
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Solution
The fourth proportional to 2,676,889,424.40, 4,015,334,136.60 and 836,639,149.20 is: 1,254,958,723.80
Step by Step Solution
- Step 1: Write the proportion equation
2,676,889,424.40 : 4,015,334,136.60 = 836,639,149.20 : x - Step 2: Convert to fraction form
2,676,889,424.40/4,015,334,136.60 = 836,639,149.20/x - Step 3: Cross multiply
2,676,889,424.40x = 4,015,334,136.60 × 836,639,149.20 - Step 4: Simplify right side
2,676,889,424.40x = 3,359,385,735,798,740,480 - Step 5: Solve for x
x = 3,359,385,735,798,740,480/2,676,889,424.40 - Step 6: Final answer
x = 1,254,958,723.80
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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.