Finding the Fourth Proportional to 4,621,118.40, 6,913,015.20 and 3,996,964.80
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Solution
The fourth proportional to 4,621,118.40, 6,913,015.20 and 3,996,964.80 is: 5,979,305.45
Step by Step Solution
- Step 1: Write the proportion equation
4,621,118.40 : 6,913,015.20 = 3,996,964.80 : x - Step 2: Convert to fraction form
4,621,118.40/6,913,015.20 = 3,996,964.80/x - Step 3: Cross multiply
4,621,118.40x = 6,913,015.20 × 3,996,964.80 - Step 4: Simplify right side
4,621,118.40x = 27,631,078,416,264.96 - Step 5: Solve for x
x = 27,631,078,416,264.96/4,621,118.40 - Step 6: Final answer
x = 5,979,305.45
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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.