Finding the Fourth Proportional to 474,128.10, 709,442.55 and 432,137.70
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Solution
The fourth proportional to 474,128.10, 709,442.55 and 432,137.70 is: 646,611.90
Step by Step Solution
- Step 1: Write the proportion equation
474,128.10 : 709,442.55 = 432,137.70 : x - Step 2: Convert to fraction form
474,128.10/709,442.55 = 432,137.70/x - Step 3: Cross multiply
474,128.10x = 709,442.55 × 432,137.70 - Step 4: Simplify right side
474,128.10x = 306,576,871,839.14 - Step 5: Solve for x
x = 306,576,871,839.14/474,128.10 - Step 6: Final answer
x = 646,611.90
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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.