Finding the Fourth Proportional to 1,813,432,812.40, 2,720,149,218.60 and 664,426,169.20
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Solution
The fourth proportional to 1,813,432,812.40, 2,720,149,218.60 and 664,426,169.20 is: 996,639,253.80
Step by Step Solution
- Step 1: Write the proportion equation
1,813,432,812.40 : 2,720,149,218.60 = 664,426,169.20 : x - Step 2: Convert to fraction form
1,813,432,812.40/2,720,149,218.60 = 664,426,169.20/x - Step 3: Cross multiply
1,813,432,812.40x = 2,720,149,218.60 × 664,426,169.20 - Step 4: Simplify right side
1,813,432,812.40x = 1,807,338,324,966,771,456 - Step 5: Solve for x
x = 1,807,338,324,966,771,456/1,813,432,812.40 - Step 6: Final answer
x = 996,639,253.80
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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.