Finding the Fourth Proportional to 957,719,668.21, 1,321,652,557.54 and 517,686,520.21
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Solution
The fourth proportional to 957,719,668.21, 1,321,652,557.54 and 517,686,520.21 is: 714,407,081.89
Step by Step Solution
- Step 1: Write the proportion equation
957,719,668.21 : 1,321,652,557.54 = 517,686,520.21 : x - Step 2: Convert to fraction form
957,719,668.21/1,321,652,557.54 = 517,686,520.21/x - Step 3: Cross multiply
957,719,668.21x = 1,321,652,557.54 × 517,686,520.21 - Step 4: Simplify right side
957,719,668.21x = 684,201,713,436,846,464 - Step 5: Solve for x
x = 684,201,713,436,846,464/957,719,668.21 - Step 6: Final answer
x = 714,407,081.89
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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.