Finding the Fourth Proportional to 2,818,979.28, 3,890,219.94 and 1,529,830.80
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Solution
The fourth proportional to 2,818,979.28, 3,890,219.94 and 1,529,830.80 is: 2,111,181.99
Step by Step Solution
- Step 1: Write the proportion equation
2,818,979.28 : 3,890,219.94 = 1,529,830.80 : x - Step 2: Convert to fraction form
2,818,979.28/3,890,219.94 = 1,529,830.80/x - Step 3: Cross multiply
2,818,979.28x = 3,890,219.94 × 1,529,830.80 - Step 4: Simplify right side
2,818,979.28x = 5,951,378,282,986.15 - Step 5: Solve for x
x = 5,951,378,282,986.15/2,818,979.28 - Step 6: Final answer
x = 2,111,181.99
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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.