Finding the Fourth Proportional to 3,121,356.36, 4,307,767.20 and 1,959,993.84
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Solution
The fourth proportional to 3,121,356.36, 4,307,767.20 and 1,959,993.84 is: 2,704,977.00
Step by Step Solution
- Step 1: Write the proportion equation
3,121,356.36 : 4,307,767.20 = 1,959,993.84 : x - Step 2: Convert to fraction form
3,121,356.36/4,307,767.20 = 1,959,993.84/x - Step 3: Cross multiply
3,121,356.36x = 4,307,767.20 × 1,959,993.84 - Step 4: Simplify right side
3,121,356.36x = 8,443,197,176,154.05 - Step 5: Solve for x
x = 8,443,197,176,154.05/3,121,356.36 - Step 6: Final answer
x = 2,704,977.00
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.