Finding the Fourth Proportional to 639,604.60, 882,656.94 and 349,217.08
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Solution
The fourth proportional to 639,604.60, 882,656.94 and 349,217.08 is: 481,920.99
Step by Step Solution
- Step 1: Write the proportion equation
639,604.60 : 882,656.94 = 349,217.08 : x - Step 2: Convert to fraction form
639,604.60/882,656.94 = 349,217.08/x - Step 3: Cross multiply
639,604.60x = 882,656.94 × 349,217.08 - Step 4: Simplify right side
639,604.60x = 308,238,879,228.54 - Step 5: Solve for x
x = 308,238,879,228.54/639,604.60 - Step 6: Final answer
x = 481,920.99
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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.