Finding the Fourth Proportional to 1,549,553.64, 2,138,438.84 and 861,239.20
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Solution
The fourth proportional to 1,549,553.64, 2,138,438.84 and 861,239.20 is: 1,188,540.56
Step by Step Solution
- Step 1: Write the proportion equation
1,549,553.64 : 2,138,438.84 = 861,239.20 : x - Step 2: Convert to fraction form
1,549,553.64/2,138,438.84 = 861,239.20/x - Step 3: Cross multiply
1,549,553.64x = 2,138,438.84 × 861,239.20 - Step 4: Simplify right side
1,549,553.64x = 1,841,707,355,810.53 - Step 5: Solve for x
x = 1,841,707,355,810.53/1,549,553.64 - Step 6: Final answer
x = 1,188,540.56
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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.