Finding the Fourth Proportional to 1,073,136.70, 1,609,921.05 and 314,976.70
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Solution
The fourth proportional to 1,073,136.70, 1,609,921.05 and 314,976.70 is: 472,528.45
Step by Step Solution
- Step 1: Write the proportion equation
1,073,136.70 : 1,609,921.05 = 314,976.70 : x - Step 2: Convert to fraction form
1,073,136.70/1,609,921.05 = 314,976.70/x - Step 3: Cross multiply
1,073,136.70x = 1,609,921.05 × 314,976.70 - Step 4: Simplify right side
1,073,136.70x = 507,087,619,589.54 - Step 5: Solve for x
x = 507,087,619,589.54/1,073,136.70 - Step 6: Final answer
x = 472,528.45
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1.5x scale
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.