Finding the Fourth Proportional to 1,661,020,463.28, 2,491,778,441.08 and 611,677,983.44
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Solution
The fourth proportional to 1,661,020,463.28, 2,491,778,441.08 and 611,677,983.44 is: 917,608,208.76
Step by Step Solution
- Step 1: Write the proportion equation
1,661,020,463.28 : 2,491,778,441.08 = 611,677,983.44 : x - Step 2: Convert to fraction form
1,661,020,463.28/2,491,778,441.08 = 611,677,983.44/x - Step 3: Cross multiply
1,661,020,463.28x = 2,491,778,441.08 × 611,677,983.44 - Step 4: Simplify right side
1,661,020,463.28x = 1,524,166,012,019,081,472 - Step 5: Solve for x
x = 1,524,166,012,019,081,472/1,661,020,463.28 - Step 6: Final answer
x = 917,608,208.76
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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.