Finding the Fourth Proportional to 2,658,844.39, 3,987,430.05 and 861,310.81
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Solution
The fourth proportional to 2,658,844.39, 3,987,430.05 and 861,310.81 is: 1,291,695.23
Step by Step Solution
- Step 1: Write the proportion equation
2,658,844.39 : 3,987,430.05 = 861,310.81 : x - Step 2: Convert to fraction form
2,658,844.39/3,987,430.05 = 861,310.81/x - Step 3: Cross multiply
2,658,844.39x = 3,987,430.05 × 861,310.81 - Step 4: Simplify right side
2,658,844.39x = 3,434,416,606,183.84 - Step 5: Solve for x
x = 3,434,416,606,183.84/2,658,844.39 - Step 6: Final answer
x = 1,291,695.23
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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.