Finding the Fourth Proportional to 1,620,668,124.48, 2,235,659,286.12 and 985,782,798.12
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Solution
The fourth proportional to 1,620,668,124.48, 2,235,659,286.12 and 985,782,798.12 is: 1,359,855,502.45
Step by Step Solution
- Step 1: Write the proportion equation
1,620,668,124.48 : 2,235,659,286.12 = 985,782,798.12 : x - Step 2: Convert to fraction form
1,620,668,124.48/2,235,659,286.12 = 985,782,798.12/x - Step 3: Cross multiply
1,620,668,124.48x = 2,235,659,286.12 × 985,782,798.12 - Step 4: Simplify right side
1,620,668,124.48x = 2,203,874,466,714,335,232 - Step 5: Solve for x
x = 2,203,874,466,714,335,232/1,620,668,124.48 - Step 6: Final answer
x = 1,359,855,502.45
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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.