Finding the Fourth Proportional to 1,285,069.05, 1,927,768.82 and 431,772.12
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Solution
The fourth proportional to 1,285,069.05, 1,927,768.82 and 431,772.12 is: 647,713.70
Step by Step Solution
- Step 1: Write the proportion equation
1,285,069.05 : 1,927,768.82 = 431,772.12 : x - Step 2: Convert to fraction form
1,285,069.05/1,927,768.82 = 431,772.12/x - Step 3: Cross multiply
1,285,069.05x = 1,927,768.82 × 431,772.12 - Step 4: Simplify right side
1,285,069.05x = 832,356,828,122.44 - Step 5: Solve for x
x = 832,356,828,122.44/1,285,069.05 - Step 6: Final answer
x = 647,713.70
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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.