Finding the Fourth Proportional to 862,164,480.40, 1,293,246,720.60 and 248,768,717.20
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Solution
The fourth proportional to 862,164,480.40, 1,293,246,720.60 and 248,768,717.20 is: 373,153,075.80
Step by Step Solution
- Step 1: Write the proportion equation
862,164,480.40 : 1,293,246,720.60 = 248,768,717.20 : x - Step 2: Convert to fraction form
862,164,480.40/1,293,246,720.60 = 248,768,717.20/x - Step 3: Cross multiply
862,164,480.40x = 1,293,246,720.60 × 248,768,717.20 - Step 4: Simplify right side
862,164,480.40x = 321,719,327,706,768,768 - Step 5: Solve for x
x = 321,719,327,706,768,768/862,164,480.40 - Step 6: Final answer
x = 373,153,075.80
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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.