Finding the Fourth Proportional to 1,239,530.85, 1,855,309.86 and 639,674.82
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Solution
The fourth proportional to 1,239,530.85, 1,855,309.86 and 639,674.82 is: 957,454.99
Step by Step Solution
- Step 1: Write the proportion equation
1,239,530.85 : 1,855,309.86 = 639,674.82 : x - Step 2: Convert to fraction form
1,239,530.85/1,855,309.86 = 639,674.82/x - Step 3: Cross multiply
1,239,530.85x = 1,855,309.86 × 639,674.82 - Step 4: Simplify right side
1,239,530.85x = 1,186,795,000,739.73 - Step 5: Solve for x
x = 1,186,795,000,739.73/1,239,530.85 - Step 6: Final answer
x = 957,454.99
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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.