Finding the Fourth Proportional to 917,438.40, 1,266,081.84 and 509,578.08
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Solution
The fourth proportional to 917,438.40, 1,266,081.84 and 509,578.08 is: 703,227.11
Step by Step Solution
- Step 1: Write the proportion equation
917,438.40 : 1,266,081.84 = 509,578.08 : x - Step 2: Convert to fraction form
917,438.40/1,266,081.84 = 509,578.08/x - Step 3: Cross multiply
917,438.40x = 1,266,081.84 × 509,578.08 - Step 4: Simplify right side
917,438.40x = 645,167,553,150.07 - Step 5: Solve for x
x = 645,167,553,150.07/917,438.40 - Step 6: Final answer
x = 703,227.11
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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.