Finding the Fourth Proportional to 859,991.80, 1,289,987.70 and 806,847.70
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Solution
The fourth proportional to 859,991.80, 1,289,987.70 and 806,847.70 is: 1,210,271.55
Step by Step Solution
- Step 1: Write the proportion equation
859,991.80 : 1,289,987.70 = 806,847.70 : x - Step 2: Convert to fraction form
859,991.80/1,289,987.70 = 806,847.70/x - Step 3: Cross multiply
859,991.80x = 1,289,987.70 × 806,847.70 - Step 4: Simplify right side
859,991.80x = 1,040,823,608,773.29 - Step 5: Solve for x
x = 1,040,823,608,773.29/859,991.80 - Step 6: Final answer
x = 1,210,271.55
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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.