Finding the Fourth Proportional to 1,587,991.26, 2,191,437.72 and 862,840.99
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Solution
The fourth proportional to 1,587,991.26, 2,191,437.72 and 862,840.99 is: 1,190,725.87
Step by Step Solution
- Step 1: Write the proportion equation
1,587,991.26 : 2,191,437.72 = 862,840.99 : x - Step 2: Convert to fraction form
1,587,991.26/2,191,437.72 = 862,840.99/x - Step 3: Cross multiply
1,587,991.26x = 2,191,437.72 × 862,840.99 - Step 4: Simplify right side
1,587,991.26x = 1,890,862,276,576.75 - Step 5: Solve for x
x = 1,890,862,276,576.75/1,587,991.26 - Step 6: Final answer
x = 1,190,725.87
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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.