Finding the Fourth Proportional to 813,126.81, 1,122,113.88 and 450,574.14
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Solution
The fourth proportional to 813,126.81, 1,122,113.88 and 450,574.14 is: 621,791.69
Step by Step Solution
- Step 1: Write the proportion equation
813,126.81 : 1,122,113.88 = 450,574.14 : x - Step 2: Convert to fraction form
813,126.81/1,122,113.88 = 450,574.14/x - Step 3: Cross multiply
813,126.81x = 1,122,113.88 × 450,574.14 - Step 4: Simplify right side
813,126.81x = 505,595,496,463.06 - Step 5: Solve for x
x = 505,595,496,463.06/813,126.81 - Step 6: Final answer
x = 621,791.69
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.