Finding the Fourth Proportional to 1,621,690,520.54, 2,432,289,999.12 and 441,362,977.97
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Solution
The fourth proportional to 1,621,690,520.54, 2,432,289,999.12 and 441,362,977.97 is: 661,977,574.45
Step by Step Solution
- Step 1: Write the proportion equation
1,621,690,520.54 : 2,432,289,999.12 = 441,362,977.97 : x - Step 2: Convert to fraction form
1,621,690,520.54/2,432,289,999.12 = 441,362,977.97/x - Step 3: Cross multiply
1,621,690,520.54x = 2,432,289,999.12 × 441,362,977.97 - Step 4: Simplify right side
1,621,690,520.54x = 1,073,522,757,298,420,992 - Step 5: Solve for x
x = 1,073,522,757,298,420,992/1,621,690,520.54 - Step 6: Final answer
x = 661,977,574.45
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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.