Finding the Fourth Proportional to 3,218,912.20, 4,828,368.30 and 3,169,145.80
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Solution
The fourth proportional to 3,218,912.20, 4,828,368.30 and 3,169,145.80 is: 4,753,718.70
Step by Step Solution
- Step 1: Write the proportion equation
3,218,912.20 : 4,828,368.30 = 3,169,145.80 : x - Step 2: Convert to fraction form
3,218,912.20/4,828,368.30 = 3,169,145.80/x - Step 3: Cross multiply
3,218,912.20x = 4,828,368.30 × 3,169,145.80 - Step 4: Simplify right side
3,218,912.20x = 15,301,803,118,798.14 - Step 5: Solve for x
x = 15,301,803,118,798.14/3,218,912.20 - Step 6: Final answer
x = 4,753,718.70
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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.