Finding the Fourth Proportional to 744,689.16, 1,027,681.56 and 405,157.68
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Solution
The fourth proportional to 744,689.16, 1,027,681.56 and 405,157.68 is: 559,123.32
Step by Step Solution
- Step 1: Write the proportion equation
744,689.16 : 1,027,681.56 = 405,157.68 : x - Step 2: Convert to fraction form
744,689.16/1,027,681.56 = 405,157.68/x - Step 3: Cross multiply
744,689.16x = 1,027,681.56 × 405,157.68 - Step 4: Simplify right side
744,689.16x = 416,373,076,628.38 - Step 5: Solve for x
x = 416,373,076,628.38/744,689.16 - Step 6: Final answer
x = 559,123.32
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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.