Finding the Fourth Proportional to 3,873,886.40, 5,808,205.20 and 1,979,069.60
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Solution
The fourth proportional to 3,873,886.40, 5,808,205.20 and 1,979,069.60 is: 2,967,263.66
Step by Step Solution
- Step 1: Write the proportion equation
3,873,886.40 : 5,808,205.20 = 1,979,069.60 : x - Step 2: Convert to fraction form
3,873,886.40/5,808,205.20 = 1,979,069.60/x - Step 3: Cross multiply
3,873,886.40x = 5,808,205.20 × 1,979,069.60 - Step 4: Simplify right side
3,873,886.40x = 11,494,842,341,881.92 - Step 5: Solve for x
x = 11,494,842,341,881.92/3,873,886.40 - Step 6: Final answer
x = 2,967,263.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.