Finding the Fourth Proportional to 939,122.21, 1,295,979.46 and 509,396.15
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Solution
The fourth proportional to 939,122.21, 1,295,979.46 and 509,396.15 is: 702,961.70
Step by Step Solution
- Step 1: Write the proportion equation
939,122.21 : 1,295,979.46 = 509,396.15 : x - Step 2: Convert to fraction form
939,122.21/1,295,979.46 = 509,396.15/x - Step 3: Cross multiply
939,122.21x = 1,295,979.46 × 509,396.15 - Step 4: Simplify right side
939,122.21x = 660,166,947,403.08 - Step 5: Solve for x
x = 660,166,947,403.08/939,122.21 - Step 6: Final answer
x = 702,961.70
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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.