Finding the Fourth Proportional to 3,862,784.84, 5,330,539.06 and 2,120,455.40
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Solution
The fourth proportional to 3,862,784.84, 5,330,539.06 and 2,120,455.40 is: 2,926,171.35
Step by Step Solution
- Step 1: Write the proportion equation
3,862,784.84 : 5,330,539.06 = 2,120,455.40 : x - Step 2: Convert to fraction form
3,862,784.84/5,330,539.06 = 2,120,455.40/x - Step 3: Cross multiply
3,862,784.84x = 5,330,539.06 × 2,120,455.40 - Step 4: Simplify right side
3,862,784.84x = 11,303,170,334,687.92 - Step 5: Solve for x
x = 11,303,170,334,687.92/3,862,784.84 - Step 6: Final answer
x = 2,926,171.35
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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.