Finding the Fourth Proportional to 3,991,807.92, 5,508,696.93 and 2,156,266.11
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Solution
The fourth proportional to 3,991,807.92, 5,508,696.93 and 2,156,266.11 is: 2,975,648.31
Step by Step Solution
- Step 1: Write the proportion equation
3,991,807.92 : 5,508,696.93 = 2,156,266.11 : x - Step 2: Convert to fraction form
3,991,807.92/5,508,696.93 = 2,156,266.11/x - Step 3: Cross multiply
3,991,807.92x = 5,508,696.93 × 2,156,266.11 - Step 4: Simplify right side
3,991,807.92x = 11,878,216,500,420.04 - Step 5: Solve for x
x = 11,878,216,500,420.04/3,991,807.92 - Step 6: Final answer
x = 2,975,648.31
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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.