Finding the Fourth Proportional to 664,994.69, 917,698.50 and 378,533.19
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Solution
The fourth proportional to 664,994.69, 917,698.50 and 378,533.19 is: 522,379.12
Step by Step Solution
- Step 1: Write the proportion equation
664,994.69 : 917,698.50 = 378,533.19 : x - Step 2: Convert to fraction form
664,994.69/917,698.50 = 378,533.19/x - Step 3: Cross multiply
664,994.69x = 917,698.50 × 378,533.19 - Step 4: Simplify right side
664,994.69x = 347,379,340,663.22 - Step 5: Solve for x
x = 347,379,340,663.22/664,994.69 - Step 6: Final answer
x = 522,379.12
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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.