Finding the Fourth Proportional to 1,291,121,425.11, 1,937,420,145.23 and 700,959,649.01
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Solution
The fourth proportional to 1,291,121,425.11, 1,937,420,145.23 and 700,959,649.01 is: 1,051,840,143.43
Step by Step Solution
- Step 1: Write the proportion equation
1,291,121,425.11 : 1,937,420,145.23 = 700,959,649.01 : x - Step 2: Convert to fraction form
1,291,121,425.11/1,937,420,145.23 = 700,959,649.01/x - Step 3: Cross multiply
1,291,121,425.11x = 1,937,420,145.23 × 700,959,649.01 - Step 4: Simplify right side
1,291,121,425.11x = 1,358,053,344,972,132,096 - Step 5: Solve for x
x = 1,358,053,344,972,132,096/1,291,121,425.11 - Step 6: Final answer
x = 1,051,840,143.43
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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.