Finding the Fourth Proportional to 3,909,642.72, 5,395,299.84 and 2,381,749.80
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Solution
The fourth proportional to 3,909,642.72, 5,395,299.84 and 2,381,749.80 is: 3,286,810.39
Step by Step Solution
- Step 1: Write the proportion equation
3,909,642.72 : 5,395,299.84 = 2,381,749.80 : x - Step 2: Convert to fraction form
3,909,642.72/5,395,299.84 = 2,381,749.80/x - Step 3: Cross multiply
3,909,642.72x = 5,395,299.84 × 2,381,749.80 - Step 4: Simplify right side
3,909,642.72x = 12,850,254,314,860.03 - Step 5: Solve for x
x = 12,850,254,314,860.03/3,909,642.72 - Step 6: Final answer
x = 3,286,810.39
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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.