Finding the Fourth Proportional to 663,137.06, 915,129.08 and 361,331.06
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Solution
The fourth proportional to 663,137.06, 915,129.08 and 361,331.06 is: 498,636.83
Step by Step Solution
- Step 1: Write the proportion equation
663,137.06 : 915,129.08 = 361,331.06 : x - Step 2: Convert to fraction form
663,137.06/915,129.08 = 361,331.06/x - Step 3: Cross multiply
663,137.06x = 915,129.08 × 361,331.06 - Step 4: Simplify right side
663,137.06x = 330,664,560,513.23 - Step 5: Solve for x
x = 330,664,560,513.23/663,137.06 - Step 6: Final answer
x = 498,636.83
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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.