Finding the Fourth Proportional to 2,638,663.36, 3,641,354.40 and 1,431,439.36
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Solution
The fourth proportional to 2,638,663.36, 3,641,354.40 and 1,431,439.36 is: 1,975,385.75
Step by Step Solution
- Step 1: Write the proportion equation
2,638,663.36 : 3,641,354.40 = 1,431,439.36 : x - Step 2: Convert to fraction form
2,638,663.36/3,641,354.40 = 1,431,439.36/x - Step 3: Cross multiply
2,638,663.36x = 3,641,354.40 × 1,431,439.36 - Step 4: Simplify right side
2,638,663.36x = 5,212,378,011,869.18 - Step 5: Solve for x
x = 5,212,378,011,869.18/2,638,663.36 - Step 6: Final answer
x = 1,975,385.75
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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.