Finding the Fourth Proportional to 1,753,787.45, 2,420,631.11 and 1,028,868.05
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Solution
The fourth proportional to 1,753,787.45, 2,420,631.11 and 1,028,868.05 is: 1,420,075.17
Step by Step Solution
- Step 1: Write the proportion equation
1,753,787.45 : 2,420,631.11 = 1,028,868.05 : x - Step 2: Convert to fraction form
1,753,787.45/2,420,631.11 = 1,028,868.05/x - Step 3: Cross multiply
1,753,787.45x = 2,420,631.11 × 1,028,868.05 - Step 4: Simplify right side
1,753,787.45x = 2,490,510,000,384.05 - Step 5: Solve for x
x = 2,490,510,000,384.05/1,753,787.45 - Step 6: Final answer
x = 1,420,075.17
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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.