Finding the Fourth Proportional to 989,431.44, 1,365,415.86 and 559,702.44
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Solution
The fourth proportional to 989,431.44, 1,365,415.86 and 559,702.44 is: 772,389.63
Step by Step Solution
- Step 1: Write the proportion equation
989,431.44 : 1,365,415.86 = 559,702.44 : x - Step 2: Convert to fraction form
989,431.44/1,365,415.86 = 559,702.44/x - Step 3: Cross multiply
989,431.44x = 1,365,415.86 × 559,702.44 - Step 4: Simplify right side
989,431.44x = 764,226,588,456.70 - Step 5: Solve for x
x = 764,226,588,456.70/989,431.44 - Step 6: Final answer
x = 772,389.63
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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.