Finding the Fourth Proportional to 579,749.70, 809,990.70 and 579,749.70
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Solution
The fourth proportional to 579,749.70, 809,990.70 and 579,749.70 is: 809,990.70
Step by Step Solution
- Step 1: Write the proportion equation
579,749.70 : 809,990.70 = 579,749.70 : x - Step 2: Convert to fraction form
579,749.70/809,990.70 = 579,749.70/x - Step 3: Cross multiply
579,749.70x = 809,990.70 × 579,749.70 - Step 4: Simplify right side
579,749.70x = 469,591,865,327.79 - Step 5: Solve for x
x = 469,591,865,327.79/579,749.70 - Step 6: Final answer
x = 809,990.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.