Finding the Fourth Proportional to 1,677,639.16, 2,315,370.36 and 989,505.64
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Solution
The fourth proportional to 1,677,639.16, 2,315,370.36 and 989,505.64 is: 1,365,652.45
Step by Step Solution
- Step 1: Write the proportion equation
1,677,639.16 : 2,315,370.36 = 989,505.64 : x - Step 2: Convert to fraction form
1,677,639.16/2,315,370.36 = 989,505.64/x - Step 3: Cross multiply
1,677,639.16x = 2,315,370.36 × 989,505.64 - Step 4: Simplify right side
1,677,639.16x = 2,291,072,029,908.83 - Step 5: Solve for x
x = 2,291,072,029,908.83/1,677,639.16 - Step 6: Final answer
x = 1,365,652.45
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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.