Finding the Fourth Proportional to 2,106,278.23, 2,906,655.20 and 1,139,406.13
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Solution
The fourth proportional to 2,106,278.23, 2,906,655.20 and 1,139,406.13 is: 1,572,375.72
Step by Step Solution
- Step 1: Write the proportion equation
2,106,278.23 : 2,906,655.20 = 1,139,406.13 : x - Step 2: Convert to fraction form
2,106,278.23/2,906,655.20 = 1,139,406.13/x - Step 3: Cross multiply
2,106,278.23x = 2,906,655.20 × 1,139,406.13 - Step 4: Simplify right side
2,106,278.23x = 3,311,860,746,979.35 - Step 5: Solve for x
x = 3,311,860,746,979.35/2,106,278.23 - Step 6: Final answer
x = 1,572,375.72
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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.