Finding the Fourth Proportional to 1,345,455.70, 2,018,183.55 and 991,161.70
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Solution
The fourth proportional to 1,345,455.70, 2,018,183.55 and 991,161.70 is: 1,486,742.55
Step by Step Solution
- Step 1: Write the proportion equation
1,345,455.70 : 2,018,183.55 = 991,161.70 : x - Step 2: Convert to fraction form
1,345,455.70/2,018,183.55 = 991,161.70/x - Step 3: Cross multiply
1,345,455.70x = 2,018,183.55 × 991,161.70 - Step 4: Simplify right side
1,345,455.70x = 2,000,346,238,330.04 - Step 5: Solve for x
x = 2,000,346,238,330.04/1,345,455.70 - Step 6: Final answer
x = 1,486,742.55
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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.