Finding the Fourth Proportional to 1,291,633,473.60, 1,935,876,203.55 and 669,505,720.73
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Solution
The fourth proportional to 1,291,633,473.60, 1,935,876,203.55 and 669,505,720.73 is: 1,003,442,709.86
Step by Step Solution
- Step 1: Write the proportion equation
1,291,633,473.60 : 1,935,876,203.55 = 669,505,720.73 : x - Step 2: Convert to fraction form
1,291,633,473.60/1,935,876,203.55 = 669,505,720.73/x - Step 3: Cross multiply
1,291,633,473.60x = 1,935,876,203.55 × 669,505,720.73 - Step 4: Simplify right side
1,291,633,473.60x = 1,296,080,192,892,119,552 - Step 5: Solve for x
x = 1,296,080,192,892,119,552/1,291,633,473.60 - Step 6: Final answer
x = 1,003,442,709.86
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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.