Finding the Fourth Proportional to 1,260,864,238.80, 1,891,296,358.20 and 777,134,830.80
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Solution
The fourth proportional to 1,260,864,238.80, 1,891,296,358.20 and 777,134,830.80 is: 1,165,702,246.20
Step by Step Solution
- Step 1: Write the proportion equation
1,260,864,238.80 : 1,891,296,358.20 = 777,134,830.80 : x - Step 2: Convert to fraction form
1,260,864,238.80/1,891,296,358.20 = 777,134,830.80/x - Step 3: Cross multiply
1,260,864,238.80x = 1,891,296,358.20 × 777,134,830.80 - Step 4: Simplify right side
1,260,864,238.80x = 1,469,792,275,322,413,056 - Step 5: Solve for x
x = 1,469,792,275,322,413,056/1,260,864,238.80 - Step 6: Final answer
x = 1,165,702,246.20
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1.5x scale
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.