Finding the Fourth Proportional to 663,135.05, 915,126.32 and 361,329.05
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Solution
The fourth proportional to 663,135.05, 915,126.32 and 361,329.05 is: 498,634.07
Step by Step Solution
- Step 1: Write the proportion equation
663,135.05 : 915,126.32 = 361,329.05 : x - Step 2: Convert to fraction form
663,135.05/915,126.32 = 361,329.05/x - Step 3: Cross multiply
663,135.05x = 915,126.32 × 361,329.05 - Step 4: Simplify right side
663,135.05x = 330,661,727,026.73 - Step 5: Solve for x
x = 330,661,727,026.73/663,135.05 - Step 6: Final answer
x = 498,634.07
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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.