Finding the Fourth Proportional to 2,166,316.80, 2,989,610.56 and 1,199,447.08
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Solution
The fourth proportional to 2,166,316.80, 2,989,610.56 and 1,199,447.08 is: 1,655,288.67
Step by Step Solution
- Step 1: Write the proportion equation
2,166,316.80 : 2,989,610.56 = 1,199,447.08 : x - Step 2: Convert to fraction form
2,166,316.80/2,989,610.56 = 1,199,447.08/x - Step 3: Cross multiply
2,166,316.80x = 2,989,610.56 × 1,199,447.08 - Step 4: Simplify right side
2,166,316.80x = 3,585,879,656,529.17 - Step 5: Solve for x
x = 3,585,879,656,529.17/2,166,316.80 - Step 6: Final answer
x = 1,655,288.67
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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.