Finding the Fourth Proportional to 991,670.36, 1,487,540.57 and 317,664.09
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Solution
The fourth proportional to 991,670.36, 1,487,540.57 and 317,664.09 is: 476,507.36
Step by Step Solution
- Step 1: Write the proportion equation
991,670.36 : 1,487,540.57 = 317,664.09 : x - Step 2: Convert to fraction form
991,670.36/1,487,540.57 = 317,664.09/x - Step 3: Cross multiply
991,670.36x = 1,487,540.57 × 317,664.09 - Step 4: Simplify right side
991,670.36x = 472,538,219,918.81 - Step 5: Solve for x
x = 472,538,219,918.81/991,670.36 - Step 6: Final answer
x = 476,507.36
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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.