Finding the Fourth Proportional to 1,178,485,879.22, 1,768,029,082.99 and 349,469,805.68
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Solution
The fourth proportional to 1,178,485,879.22, 1,768,029,082.99 and 349,469,805.68 is: 524,293,749.26
Step by Step Solution
- Step 1: Write the proportion equation
1,178,485,879.22 : 1,768,029,082.99 = 349,469,805.68 : x - Step 2: Convert to fraction form
1,178,485,879.22/1,768,029,082.99 = 349,469,805.68/x - Step 3: Cross multiply
1,178,485,879.22x = 1,768,029,082.99 × 349,469,805.68 - Step 4: Simplify right side
1,178,485,879.22x = 617,872,780,067,977,088 - Step 5: Solve for x
x = 617,872,780,067,977,088/1,178,485,879.22 - Step 6: Final answer
x = 524,293,749.26
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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.