Finding the Fourth Proportional to 1,620,239,765, 2,236,290,576.23 and 985,025,281.99
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Solution
The fourth proportional to 1,620,239,765, 2,236,290,576.23 and 985,025,281.99 is: 1,359,553,569.20
Step by Step Solution
- Step 1: Write the proportion equation
1,620,239,765 : 2,236,290,576.23 = 985,025,281.99 : x - Step 2: Convert to fraction form
1,620,239,765/2,236,290,576.23 = 985,025,281.99/x - Step 3: Cross multiply
1,620,239,765x = 2,236,290,576.23 × 985,025,281.99 - Step 4: Simplify right side
1,620,239,765x = 2,202,802,755,462,535,424 - Step 5: Solve for x
x = 2,202,802,755,462,535,424/1,620,239,765 - Step 6: Final answer
x = 1,359,553,569.20
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.