Finding the Fourth Proportional to 839,910.70, 1,259,866.05 and 485,616.70
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Solution
The fourth proportional to 839,910.70, 1,259,866.05 and 485,616.70 is: 728,425.05
Step by Step Solution
- Step 1: Write the proportion equation
839,910.70 : 1,259,866.05 = 485,616.70 : x - Step 2: Convert to fraction form
839,910.70/1,259,866.05 = 485,616.70/x - Step 3: Cross multiply
839,910.70x = 1,259,866.05 × 485,616.70 - Step 4: Simplify right side
839,910.70x = 611,811,993,643.04 - Step 5: Solve for x
x = 611,811,993,643.04/839,910.70 - Step 6: Final answer
x = 728,425.05
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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.